A Slatington driver is facing a charge of driving under the influence of a controlled substance following an incident that occurred on May 26.

State police at Fogelsville said David Wayne Smith, 38, was stopped at 2:31 p.m. along Route 309 at Route 22, in South Whitehall Township for an equipment violation. He was found to be under the influence of a controlled substance and taken into custody. Troopers also found a small amount of marijuana in the vehicle. Charges have been filed.