A Centerville woman was sexually assaulted following a rock concert Monday night at the Salt Palace.

The woman, 18, had just left a concert about 10:30 p.m. and was walking in an alleyway between Symphony Hall and the art center when two men approached her and asked for the time of day, according to a police report.After she said she didn't know, they grabbed her, pulled her hair and sexually abused her, then forced her to perform sex acts, according to the report.

Following the attack, the woman went to Salt Palace security, which notified police. The victim was later treated at Holy Cross Hospital.

Her attackers were described as Caucasian and about 20 years old. One was about 6 feet 3 inches tall with long bleached-blond hair, wearing black pants and a "Motley Crue" T-shirt. The other assailant was about 5 feet 6 inches tall.