Police are warning the public after three reports of sexual assault against women in Burnaby, B.C., in the past week.

Two women reported being followed as they walked along Mary Avenue and 16th Street last Thursday when an unknown man approached them from behind and pulled their pants to the ground.

The suspect in both incidents is described as:

Late teens to early 20s.

Five-foot seven to five-foot ten.

Thin build.

Prominent dark eyebrows.

Wearing a black baseball hat, black hoodie and dark jeans.

Two days later — and just a few blocks away from the earlier incidents — a woman reported being approached from behind by a man who grabbed her buttocks. She was walking in an alley in the 7400 block of Kingsway before 8 a.m. PT.

This suspect is described as:

Light-skinned male.

Five-foot seven to five-foot nine.

Thin build.

Wearing a red jacket and blue jeans.

None of the women were injured. Police believe the incidents are related.

Burnaby RCMP are asking the public to be vigilant while walking alone, and if possible to walk in pairs or groups.