Police are investigating whether an attack on campus Thursday night was related to the sexual assault reported on Oct. 13, a police official said.

Police Lt. Ramiro Abad said TCU and Fort Worth police departments would work together on the investigation. An increase in nighttime campus security that stemmed from the first assault is still in effect.

A female student reported late Thursday that a man grabbed her from behind while she was walking near Jarvis Hall at about 11:30 p.m. Thursday, but the student was able to get away, according to campus police.

The suspect in Thursday night’s attack is described as a 6-foot tall white man in his late 20s with shaggy blond hair, according to a campuswide e-mail from TCU Police.

The suspect in the Oct. 13 assault is described as 6-foot tall white man of average build in his early 20s with straight blond hair and a mole on his right cheek.

A female student was sexually assaulted at about 9 p.m. Oct. 13 as she was walking by the Sadler Lawn from her dormitory to the library, according to police. The suspect approached the victim from behind and threatened her with a knife, dragged her near a building and sexually assaulted her with an object, according to police.