WOODBRIDGE, Va. (WUSA) --Wednesday, a 33-year-old Econo Lodge clerk was forced into a room at knife point by a masked man, knocked unconscious and sexually assaulted, say Prince William County Police.

Police say they responded to the Econo Lodge in the 13300 block of Gordon Boulevard in Woodbridge at 10:13 p.m.

The clerk told police that she received a call to let someone into a room. In the stairway on her way to the room, she was approached from behind by a masked man. He forced her into the room at knife point, then knocked her unconscious. Police say she was sexually assaulted.

Police also say the room the clerk was headed to was later determined to have been vacant.

The clerk was not able to provide police with a further description of the assailant.

Police continue to investigate and ask anyone with information to call Crime Solvers at 703-670-3700 or 1-866-411-TIPS. You don't have to give your name. You could earn up to a $1,000 reward.

Read or Share this story: http://on.wusa9.com/1dUBk15