Taichung Second Precinct officers were conducting a drink-driving and drug-driving roadside checkpoint on the evening of 10 November 2026.[1][2][3][4][5][6][7] The checkpoint was on Shuangshi Road in North District and was led by Liren station chief Jiang Zhenjian.[2][4][5] At about 9:11 p.m., officers saw a car stop suddenly before the checkpoint and signalled its driver to stop for inspection.[1][2][3][4][5][8] The vehicle was a diversified taxi driven by a 26-year-old man surnamed Xu, carrying two 23-year-old men surnamed Huang and Guan in the back seat.[1][2][3][4][9][5][6][7][8] Huang and Guan were friends of the driver, not fare-paying passengers.[2][4][5] Police noted that Huang had a prior criminal record for drug offences.[3][6][7] Officers restrained Huang after he tried to rush into the oncoming lane, and seized cannabis vape cartridges and other contraband.[10][2][3][4][9][5][6][7][8][11] The case was transferred to the Taichung District Prosecutors Office on suspicion of violating the Narcotics Hazard Prevention Act, with police saying they would trace the drug source.[1][2][4][9][5][8][11]

Officers found no obvious signs of drug use by the driver and ruled out drug-driving on his part.[1][3][4][5][6][7][8] During the check, officers smelled suspected burning ketamine inside the car and asked all three occupants to get out for inspection.[1][3][4][9][5][6][7][8][11] Huang kept clutching his jacket pocket and behaved unusually during the inspection.[1][3][4][9][5][6][7][8][11]

The precinct said it would continue roadside checks and patrols against drugs, drink-driving and drug-driving, and asked the public to call 110 about suspicious activity.[1][5][8][11]