Herndon police are looking for a man who they say posed as a law enforcement officer and sexually assaulted two women within hours on Tuesday.

One assault occurred in the 1200-block of Magnolia Lane by Alabama Drive Park, and the other less than two miles away near a busy shopping center in the 400-block of Elden Street, according to police.

Police say the man is about 5-foot-5, in his mid-30s and weighs about 150 pounds. He was driving a gray, mid-sized, four-door vehicle. Police advise anyone with information on the incidents to call Herndon police at 703-435-6846.