Saskatoon police have released a composite sketch, seen on the right-hand side of your screen, of the sexual assault suspect after a 19-year-old woman was attacked in broad daylight Thursday morning on the city's west side.

The suspect is further described as a 20 to 30-year-old First Nations male, six feet tall with a medium build.  He has short black hair in a buzz cut, full lips and was said to be wearing a grey t-shirt and baggy jeans at the time of the attack. 

The victim did not know the suspect and police are worried he could attack again.

Police were called to a building on the 400 block of 31st Street around 10 a.m. Thursday. 

According to police, a male approached the female, sexually assaulted her and fled the scene.

Police are warning women to not walk alone and to be extra vigilant of their surroundings.