A 19-year-old woman was sexually assaulted while jogging in Shubie Park in Dartmouth on Sunday, police say.

Halifax Regional Police said the attack happened at 9 p.m. near a field and bridge.

A man was walking in the jogger's direction, and as she passed by, he grabbed her from behind and forced her into the woods, police said Monday.

Police will step up patrols in Shubie Park as a result of the attack, police spokesman Const. Brian Palmeter said.

"We do believe this was a random incident. We will now be, as a result of this incident, increasing our presence in Shubie Park," he said.

"There will be an added bike patrol and other resources put in place, and certainly our goal is to find out who's responsible and bring them before the courts."

Palmeter said police are asking any witnesses to come forward.

The suspect is described as a thin white man, 19 to 25 years old, about five-foot-six in height, with short dark hair and chin-strap facial hair. He was wearing a white t-shirt with black shoes and jeans.

"So, if anybody recalls seeing this individual or can provide any information about this incident, we encourage them call police at 490-5333," Palmeter said.

Witnesses can also call Crime Stoppers at 1-800-222-TIPS (8477).