The U.S. Park Police is investigating the report of a sexual assault that occurred Wednesday night on the Capitol Crescent Trail near the Georgetown waterfront.

A female jogger told police she was attacked from behind and placed in a chokehold at about 9:16 p.m.

The woman lost consciousness and awoke with her pants down and the suspect fondling her, according to a news release. The victim screamed, and her attacker ran away toward Fletcher’s Boat House, the release states.

The attack took place on the trail north of the Three Sisters rock formation, near the vicinity of Water Street NW, according to police.

The suspect is described as a black male with medium-colored skin, between 5 feet, 8 inches and 5 feet, 11 inches tall, and weighing approximately 180 to 200 pounds. He is described as having a muscular/fit build, with 3- to 4-inch dreadlocks and "a light scruffy beard." At the time of the attack, he was wearing a white shirt and black jersey shorts.

Police are asking anyone with information to contact Detective Glenn Luppino at 202-610-8750 and reference case No. 12-36735. You can also call the U.S. Park Police Tip Line at 202-610-8737.