A fatal crash on the Karak Highway involving a trailer truck has resulted in four deaths. Police have detained the 40-year-old truck driver following the incident. Initial investigations revealed the driver tested positive for drugs. Bentong District Police Chief Zaiham Mohd Kahar confirmed the arrest this morning. Authorities are continuing to investigate the cause of the collision and the extent of drug involvement. The crash has prompted renewed calls for stricter drug testing for commercial vehicle operators to enhance road safety. Further details regarding the victims and the specific drugs detected are pending official reports.