A man tried to drag a 20-year-old woman into a wooded area as she walked along Veirs Mill Road in the Rockville area during commuting hours Monday evening, police said.

The woman was able to escape and call police.

"Detectives believe passing motorists may have witnessed the assault," police said in a statement. They asked anyone with information to call 240-773-5070 or 1-866-411-TIPS (8477).

Just after 7 p.m. Monday, police were called to the area of Veirs Mill and Twinbrook Parkway. They learned that between 6:15 p.m. and 6:30 p.m., the 20-year-old was walking along Veirs Mill toward Aspen Hill Road when she was approached from behind by a man who tried to talk to her. She kept walking.

The suspect grabbed her and tried to pull her into the woods, police said. The victim was not injured during the assault, police said.

Officers and at least one police dog searched the area but couldn't find the man. Police described him as a Hispanic male, 30 to 40 years old, 5' 1" tall, with a medium build. He was wearing a dark, tan jacket, red shirt and baseball cap, according to police.