DALLAS -- A drug test conducted on the driver involved in the Texas charter bus crash that killed 17 passengers last year found evidence of recent cocaine use.

Documents prepared by the Sherman police department show cocaine was discovered in a urine sample from Barrett Broussard during the National Transportation Safety Board's investigation of the accident. The Associated Press obtained the documents under the Texas Public Information Act.

The 53-year-old Broussard hasn't been charged with a crime because the NTSB did not find evidence of cocaine in his blood. However, the Houston man could face a fine from the Federal Motor Carrier Safety Administration.

The bus was carrying 55 members of Houston's Vietnamese community to a Catholic conclave in Missouri when it crashed Aug. 8, 2008.