UPDATE: Ten people have returned a positive reading for drugs during a large scale traffic operation in Toowoomba today.

Police conducted 1870 random breath tests and 77 drug tests during Operation North Pyrite.

As a result of the operation police issued 35 people with traffic offence notices, 12 people were charged with 30 drug offences, four people were charged with 15 property offences, two people were charged with 14 weapons charges and 13 people were charged with a further 19 offences.

EARLIER: More than 70 police officers are in force across parts of Toowoomba today as part of Operation North Pyrite.

A large static alcohol and drug testing site is operating on Hursley St as well as Tor and McGregor Sts with mobile officers also out and about.

Police are currently in day two of the operation after raids were carried out in the Lockyer Valley yesterday.

Inspector Mark Wheeler said the operation had been initiated by uniformed officers from the Tactical Crime Squad and supported by the Road Policing Command and the district crime group.

"What we are doing today is locking down the north western area of Toowoomba in a saturation style operation," he said.

"The idea of the operation is to identify offenders that are using our roads and to prosecute them.

"The operation isn't just about traffic offences, it is also about people committing criminal offences such as possessing drugs and stolen property and using our road network."

Insp. Wheeler said already this year there had been 875 drug drivers detected and more than 970 drink drivers, which was a significant threat to public safety.

"This operation is over a two day period and during the operation there will be a large number of vehicles intercepted, search and people checked," he said.

"We are also looking for people who may be wanted for questioning in relation to criminal offences and also people who may be wanted on warrants."

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