AN Australian child is missing and four other Aussies are injured as authorities hunt the terrorist that drove a van through crowds in Barcelona and victims are named.
At least 14 people were killed in the Barcelona and Cambrils attacks and more than 130 injured.
Grave fears are held for Julian Cadman, 7, from Sydney, who is believed to have been near Barcelona's famed pedestrian street Las Ramblas when a terrorist in a white Fiat rental van mowed down innocent people "like a field of corn".
A FAMILY'S FEAR
Julian Cadman's frantic father Andrew - who found out about the attack on radio at 6am yesterday - was last night on a flight to Spain from Australia in a desperate bid to find his son and be by his wife Jom's bedside.
The Lalor Park mother and son had only been in Spain a few days and are believed to have been separated when they were caught up in yesterday's van attack, which killed at least people and injured more than 100 others in the popular Las Ramblas tourist boulevard.
Jom Cadman is one of two NSW woman hospitalised after the brutal rampage and among four Australians injured. Two Victorian men were also hurt but not hospitalised.
Julian's family posted pictures and messages of Facebook, with Claire O'Sullivan writing: "My nephew Julian Cadman is missing. Please like and share. We have found Jom and she is serious but stable in hospital.''
"Julian is seven-years-old and was out with Jom and they were separated. Please share if you have family or friends in Barcelona."
Mr Cadman's boss Scott Bowman said that Jom and Julian were in Barcelona for a friend's wedding, only arriving in Spain in the last few days.
He said the cabinet-maker father-of-one was a "bloody mess" after initially finding out about the Barcelona attack at 6am yesterday over the radio at work.
"He said, 'I better ring my wife and see if she's all right'.
"He couldn't get on to her," Mr Bowman said.
Julian attends St Bernadette's Primary in Lalor Park and his mother's Facebook page is littered with photos of him dressed up as batman, a cowboy and practising archery.
"All that we've been told is that she is in a serious condition, she has got multiple fractures everywhere - arms, legs, severe facial injuries. She has suspected spinal injuries and possible internal injuries," Mr Bowman said.
UK Prime Minister Theresa May said officials were "urgently looking into reports" of a missing British dual-nationality child, believed to be Julian.
TERROR CELL OF YOUNG FRIENDS
The 17-year-old suspected driver of the van that drove through the crowds in Barcelona was among those killed in a police shootout several hours later, in the seaside resort town of Cambrils.
Moussa Oukabir, 17, is believed to have fled the La Rambla attack before joining other members of the group waiting nearby.
Spanish media is reporting the terror cell appears to have been made up of a young group of friends from the Barcelona suburb of Ripoll who played football together and whose families lived near each other.
All drove in a second van to Cambrils, 120km to Barcelona's south, where their attempt to stage a similar attack in the early hours of the morning was foiled by a single armed police officer.
The attackers, wielding knives and possible explosive vests, crashed through a gathering of people on the town's promenade.
Six passers-by and a police officer were injured before the men's van overturned.
Police chief Josep Lluis Trapero said a single police officer killed four of the knife-wielding suspects. A fifth suspect was shot down as he attempted to flee.
The dead terrorists at Cambrils were wearing suicide vests, but there are reports they may have been fake.
Catalonia's regional police chief said all five have been identified, but have so far released the names of only three - Moussa Oukabir, 17, Said Aallaa, 18, and Mohamed Hychami, 24. All are linked to the Barcelona attack.
Police said they were searching for a fourth suspect from the Barcelona attack, Younes Abouyaaqoub, aged 22, along with two other believed plotters.
Police have raided the Ripoll homes of two of the dead attackers, Said Aallaa and Moussa Oukabir. Four suspects have so far been arrested, three in Ripoll and another in Alcanar.
"None of them have any kind of terrorist background," he said.
Three are Moroccan citizens and one is Spanish with their ages ranging from 21-34.
Local media attributes the arrests to documentation found inside the van in Barcelona driven by Moussa.
The papers included the name of a man from the town of Alcanar, who had been seriously injured in a house explosion earlier this week. Initially believed to be caused by a gas leak, explosive substances have since been detected at the address.
Police said the suspects had been planning a much bigger attack.
A cousin ot the Oukabir brothers told Spanish media group El Pais "eight young people" are missing from the Ripoll. Other neighbours said they were a group of friends who all played football together.
Spanish police last night circulated a photograph of their prime suspect, a 28-year-old Spaniard of Moroccan origin named Driss Oukabir, who they said was wanted over the apparent hiring of a second van thought to have been used as a getaway car.
But hours later Mr Oukabir handed himself into police, telling them his brother, 17-year-old Moussa Oukabir, had stolen his documents.
The brothers are Spanish residents from a Moroccan background.
Spanish media is reporting that an account on the social network Kiwi contains comments referencing the "killing of infidels'' - language often used by jihadi extremists against non-Muslims.
The account bears the name of Moussa Oukabir, and a photograph of him.
Spanish police said they are searching for a Renault Kangoo van which was rented by the Barcelona suspects on Thursday.
French security sources told the AP that four men being sought by the police may have crossed the border into France in the vehicle.
France's interior minister, Gérard Collomb, earlier said that surveillance on the usually open border between his country and Spain had been heightened
Police and medical personnel attend to injured after the attack at Las Ramblas. Picture: Getty
The shouts of "I'm not afraid" rang out across Barcelona's Plaça Catalunya, repeated rhythmically by the thousands who had gathered to pay respects to the dead and injured.
Red roses were held aloft during a minute's silence.
King Felipe VI and Prime Minister Mariano Rajoy joined the residents and visitors for the vigil.
"Unfortunately, Spaniards know the absurd and irrational pain that terrorism causes," Mr Rajoy said, as he declared three days of mourning. "We have received blows like this in recent years, but we also know that terrorists can be beaten."
Queen Elizabeth II also sent a message of condolence to King Felipe VI of Spain and his people.
"It is deeply upsetting when innocent people are put at risk in this way when going about their daily lives," she wrote. "Our thoughts and prayers are with those who have lost loved ones and the people who are recovering in hospital. Please convey our heartfelt sympathies to all who have been affected by these appalling incidents."
MOMENTS OF TERROR
On leafy Las Ramblas, panicked tourists enjoying a warm summer's evening ran screaming into nearby restaurants to escape as the van sped at 80km/h along the crowded promenade, running down men, women and children for more than 500m before the driver fled.
Moussa Oukabir, 18, a resident of Barcelona, was being sought by Spanish counter-terrorism police after his older brother, Driss, told police he had stolen his identification documents to rent a van later found dumped away from the scene of the attack in Las Ramblas.
Horrifying images posted on social media showed pools of blood, crumpled bodies, several children's prams and abandoned shoes, bags and water bottles left in the van's wake.
A witness, Isaac, told Spanish media the van was accelerating along the street.
"He mounted the pavement to run people over. We saw the van passing by running people over at 50 miles an hour (80km/h). It was as if it was driving through a field of corn,'' he said.
Two women from New South Wales were injured and were last night in a serious but stable condition in a Spanish hospital. Two young men from Melbourne were also treated for minor injuries and released.
Three German citizens, a Greek and a Belgian are thought to be among the dead. Twenty-six French citizens were injured, 11 seriously.
Australian Foreign Minister Julie Bishop said eight Australians were affected by the terror attack, included the injured, and three who needed consular assistance.
"Of the four injured, that includes one woman, who is from NSW in a stable condition, but was seriously injured," Ms Bishop said.
"A second woman, also from NSW, is in a serious condition in hospital. She was travelling on a British passport."
Ms Bishop said the young men, who are believed to be from Melbourne's west and travelling on an overseas holiday, had been treated in hospital and released.
The mother of one of the young men's friends, Raeline, told 3AW in Melbourne her son had been told as he checked into his hotel that his two friends had been "involved in a terrorist attack, they are injured''.
One is thought to have a minor head injuries and the group suffered from shock.
"Again, I remind Australians that if you are worried about loved ones or families, please try and get in touch with them directly, but if you are unable to do so, and you are calling from Australia, the number is 1300 555 135."
Sydney-based Commonwealth bank worker Suria Intan was named as victim. She is in a serious but stable condition in the Hospital Clinic in Barcelona.
She was meant to come home to Australia this weekend after a three-week holiday with three girlfriends. Together, they visited London's Sky Garden, the Eiffel Tower, the Bernese Alps and Lake Thun in Switzerland, Positano and Ravello on the Amalfi Coast, according to photos posted on Facebook.
They also went to Barcelona's famous Sagrada Familia basilica.
Ms Intan, from Campsie, grew up in Indonesia and studied in Sydney.
Her LinkedIn profile said she has worked for the Commonwealth Bank in Lidcombe for 11 years. She is also involved in the Hillsong Church.
A spokesman for the Church said they had been in touch with Hillsong in Barcelona to support her.
Jihadi group Islamic State claimed responsibility for the attack which happened at 4.50pm on Thursday Barcelona time (12.50pm AEST).
Australian Julia Monaco, 26, who was in Las Ramblas, told 3AW it was the third terrorist attack she has experienced in three months.
Monaco ended up in lockdown in the London tube in June after a speeding van hit pedestrians on the London Bridge. Days later, she was in Paris when French police shot a man who attacked an officer with a hammer outside of the Notre Dame cathedral.
HOW THE ATTACKS UNFOLDED
The attacks appeared highly organised and were linked to an explosion 24 hours earlier at a house in Alcanar, 200km south of Barcelona, where gas canisters exploded, killing one person.
Police found incriminating documents at the scene and believed the canisters were being prepared for use in the Las Ramblas attack.
The attack in Barcelona - the first Islamist attack in Spain since the Madrid train bombings in 2004 which killed 191 people and injured 1800 more - targeted the city's most famous tourist precinct, which was packed with foreign visitors enjoying the European summer school holidays.
Regional police chief Josep Lluis Trapero said the terrorist intended to "kill as many people as possible''.
"At 16.50 a van entered the pedestrian area of the Rambla, and drove for many metres, running over hundreds of people,'' he said in a news conference.
"The driver got out of the van and ran away. There was no shouting, no phrases which sometimes accompany such attacks.''
Islamic State's propaganda arm Amaq said: "the perpetrators of the Barcelona attack are soldiers of the Islamic State and carried out the operation in response to calls for targeting coalition states.''
Australia is one of the coalition members targeting Islamic State fighters in Iraq and Syria.
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