Brigham Young University police are investigating the assault of 20-year-old woman on the south edge of campus early Friday.

The student was walking in the area of 800 North about 5:30 a.m. when a man wearing dark clothes and beanie cap began to follow her, said BYU Police Lt. Greg Barber. As she walked up a flight of stairs to an emergency phone near 400 East, the man put his hand over her mouth and forced her into some bushes.Barber said the two struggled and rolled into a canal. Some pedestrians in the area scared away the assailant, he said.