A combined force of 150 officers from different law enforcement agencies Thursday conducted a pre-dawn raid operation on 19 locations in Bangkok's Thon Buri district suspected of being outlets for selling illegal drugs.
The contingent included 120 police officers from the Crime Suppression Division and 30 officers from the Office of the Narcotics Control Board.
During the operation, two men were arrested and illicit drugs were seized.
Pol Col Torsak Sukwimon, commander of the Crime Suppression Division's Special Operations, said a 17-year-old man and Adul Dorloh, 24, are now in police custody after they were allegedly found in possession of drugs.
Pol Col Torsak said the operation, which aimed to suppress illicit drugs rampant in local communities, began about 4am Thursday.
Police believe the 19 locations raided are linked with illicit drugs, Pol Col Torsak said.
Pol Col Torsak said the 17-year-old man whose name was withheld was apprehended in a two-storey house in Soi Pracha Uthit 76 in Thung Kru district. He was found with a gramme of ketamine.
The man admitted to authorities that he used the illicit drug but denied he was selling it, police said.
Pol Col Torsak said Mr Dorloh was caught by authorities with a gramme of marijuana and a pipe for smoking the drug following a raid in Bang Phrom 40 community in Taling Chan district.
Meanwhile, a 40-year-old Lao national has been nabbed with 840 cannabis bricks, worth more than 15 million baht in Nakhon Phanom's Tha Uthen district, police said.
Nakhon Phanom provincial police commander Suwichan Yankittikul said Taoton Akkarawong, 40, from Laos, was caught by authorities on Wednesday night while he and his accomplices were trying to smuggle illicit drugs across the Thai border in Tha Uthen district.
Pol Maj Gen Suwichan was speaking as he announced arrests and seizures of drugs from suspects over the past week.
He said nearly two tonnes of cannabis bricks had been seized from suspects over the past week.
Authorities found a group of people trying to carry sacks laden with drugs from a motorboat near a dam.