A Pittsburgh area high school wrestling coach has been forced to leave his post after he bit a wrestler during a practice last week.

Mike Marshall, a 36-year-old local probation officer, resigned earlier this week after he bit an unidentified Central Cambria High wrestler Jan. 21 while the two were grappling during practice. A police officer said the wrestler was bitten on the upper thigh, causing bruising, but without drawing blood.

The officer said the student opted against pressing charges against Marshall if the coach agreed to resign. Marshall's attorney characterized the biting as "completely innocent" and not malicious.