Police are stepped up patrols on an area of the Bruce Trail after a woman was nearly sexually assaulted there on Friday.

The woman was walking near the Kenilworth Access around 10:30 a.m. June 16 when a man approached her with a knife, Hamilton police say.

The man forced her into a quiet area adjacent to the trail, police say, and tried to sexually assault her. She escaped and ran, and reported it to police.

The suspect is described as a white male around 5'7" or 5'8", and in his early twenties with a navy blue hoodie and a bandana over his face.

Anyone who sees someone in the area who fits that description should call police or 911, and not approach the person.

Anyone with more information should call Det. Carolyne Rashford of the Sexual Assault Unit at 905-540-5543 or Crimestoppers at 1-800-222-TIPS.