UPDATE: Detectives believe a middle-aged man was stabbed to death outside a Sydney train station by a 29-year-old man in a "random" weekend attack.
Brian Lee was charged with murder after the victim - 56-year-old Klaus Petr - was found by members of the public near Hurstville train station on Saturday morning.
Police say the victim suffered "severe lacerations".
They seized an "edged weapon" when arresting Lee nearby, less than 30 minutes after the attack.
Lee lives on Patrick St just north of the train station. Police allege Mr Petr was killed just after 6am in a small park near the station.
He was found near the station entrance by people who had been practising tai chi in the nearby park.
It's believed he may have been sitting in the park reading a bible when the alleged attack occurred.
Lee was arrested following a tip-off from the public.
It is understood it was his brother who rang authorities.
A NSW Police Force spokesman said detectives do not believe Lee knew the victim.
"It appears to be random," the spokesman said.
Lee was charged with murder on Sunday but was not required to appear when his matter was briefly mentioned in Parramatta Local Court. He will return to court in March.
EARLIER: A man has been stabbed to death in broad daylight outside a train station in Sydney's south-west.
The man in his 60s was near a park bench outside Hurstville Train Station when he was stabbed in the torso just after 6am on Saturday.
He stumbled about 20 metres across a small park before collapsing on a footpath at the station entrance.
Women taking part in Tai Chi practice nearby came across the man's body, surrounded by a trail of blood, and raised the alarm.
"He did receive severe lacerations to the body," St George Local Area Command Inspector David Ralph said.
"I'm not sure how many. (Paramedics) did attempt to revive him as police did as well but unfortunately it didn't last very long."
Less than an hour later, police received a tip-off and raced to a house in nearby Patrick St.
A man in his 20s was arrested and a knife allegedly linked to the fatal stabbing was found inside the home.
It's unclear if the two men knew each other or if it was a random attack.
"The investigation is still in its stages of infancy," Inspector Ralph said.
"I don't know if they are related or know each other."
Police hope council CCTV footage of the park will shed light on exactly what happened.
Detectives were at the man's house on Saturday morning and focused on a white Honda sedan parked across the driveway.
Neighbours say the man only moved into the weatherboard a few weeks ago.
Despite the killing taking place the middle of Hurstville, most surrounding business were not open yet and witnesses were few and far between.
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