A Los Angeles County police officer has been arrested for allegedly sexual assaulting a woman while on duty.
California Highway Patrol officials say Michael Dee Clark assaulted a woman on April 1 on a freeway near Los Angeles International Airport.
The officer was part of the county's police force, which oversees security at county parks, libraries, hospitals and other county buildings.
CHP spokesman Travis Ruiz says Clark was pulled over while driving a county police car and arrested on Wednesday.
CHP investigators believe Clark is responsible for other similar assaults.
Copyright 2010 The Associated Press.