
The Bentley driver involved in an expressway collision that left eight people injured on Sunday was found to have narcotic substances in his system, police said on Friday, citing the results of a blood test.
An initial test showed the substance could be methamphetamine, ketamine, diazepam or nordiazepam, and a further test is being done to determine exactly what it was, said Pol Lt Gen Jirasan Kaewsaeng-Ek, deputy commissioner of the Metropolitan Police Bureau (MPB).