A woman was sexually assaulted near the Berkeley campus over the weekend. The latest attack, which police believe to be at least the fourth committed by the same suspect, occurred early Saturday morning and follows the same pattern as the previous three. As in those cases, the suspect approached the woman from behind before grabbing her and assaulting her.

"The female victim, a Cal student, was walking on the 2500 block of Etna near Dwight when she was approached from behind by the male suspect who dragged her off of the sidewalk and sexually assaulted her," reads a UC Berkeley Police crime alert. "The suspect was last seen fleeing northbound on Etna. The suspect is described as: a male Hispanic in his mid-20s-early-30s wearing a dark hooded sweatshirt, with a scruffy face."

Berkeleyside reports that the 21-year-old victim in Saturday's attack fought back against the man.

UC Berkeley offers a service known as "BearWALK," wherein uniformed students provides free walks home late at night to students.

Police are seeking the public's help in identifying the suspect, and if you have any information you can call an anonymous tip line at 1-800-222-8477. Police recommend that "[if] you feel you are being followed, cross the street, yell, run and look for a well-lit area or occupied building."

Previously: Video: Berkeley Sexual Assault Suspect Flees Scene Of Third Attack

Screenshot of the approximate location of the fourth assault, via Google Maps.