A 24-year-old woman was dragged into the woods and sexually assaulted Wednesday night in the Burke area, Fairfax County police said.

Police said the woman was walking in in the 9700 block of Commonwealth Boulevard about 10 p.m. when a man grabbed her from behind and pulled into a wooded area. They said the man threatened her with a knife or other edged weapon, and sexually assaulted her.

Police said the man was startled by a noise and fled. He was described as white, about 5 foot 7 and was wearing a sweatshirt. His face was partially-concealed, police said.

Anyone with information on the case is asked to call Crime Solvers at 1-866-411-8477, email at www.fairfaxcrimesolvers.org or text “TIP187” plus a message to CRIMES/274637.