FREDERICK COUNTY, Md. (WUSA) --  Maryland State Police say alcohol may be a factor in a collision that killed a pedestrian in the Rt. 26 area of Unionville Road in Frederick County.

According to state police, troopers arrived at Liberty Road in the area of Unionville Road at approximately 4:41 a.m. Friday for the report of a pedestrian being struck by a vehicle. They determined that  21-year-old Kevin Stanley Williams of Frederick was struck by a 2002 Volkswagen car that was traveling westbound on Rt. 26.

Before he was struck, Williams was found lying on the shoulder of Rt. 26 by a passerby who then stopped to check on the Williams.  Williams suddenly awoke, jumped to his feet and ran into the roadway. He was then struck by the car.

He received life threatening injuries and later died. 

The investigation is ongoing and no charges have been filed, say police.