Investigators say the woman was walking on the sidewalk in the 2900 block of Annandale Road about 8:30 p.m., when an unknown man approached her and pulled her off the sidewalk, where he threatened her.
As another man approached, the suspect pushed the victim to the ground and fled. The victim ran home and called the police.
The suspect can only be described as male with a Spanish accent, police said.
Anyone with information is asked to contact Crime Solvers by phone at 1-866-411-TIPS/8477, e-mail at www.fairfaxcrimesolvers.org or text â€œTIP187â€ plus your message to CRIMES/274637 or call Fairfax County Police at 703-691-2131.