Former Olympic

track star Danny Harris, who had recently been a coach at Gabrielino High School, was arrested Friday on suspicion of contacting a minor with the intent of committing a sexual offense, authorities said.

The San Gabriel Police Department said it launched an investigation after a report of alleged inappropriate contacts between Harris and a student. Harris could not be reached for comment.

A silver medalist in the 400-meter hurdles at the 1984 Summer Games in Los Angeles, Harris is the subject of a recent documentary film, “Crossing the Line,” that chronicles his journey from elite athlete to drug addict and back. The San Gabriel Unified School District relieved him of his duties on May 17, police said.