ANN ARBOR, MI - A student reported being forced into a closet and raped in a University of Michigan dormitory last week.

The woman reported that she was grabbed by an unknown man about 10:30 p.m. March 27 in South Quadrangle Residence Hall, 600 E. Madison St., according to a crime alert issued by University of Michigan Division of Public Safety and Security on Friday, April 6.

The man pulled her into a custodial closet and sexually assaulted her, police said in the alert. The incident is being investigated as third-degree sexual assault, according to the alert.

The man is described as an about 19- to 20-year-old white man, about 5 feet 10 inches tall and about 120-125 pounds, with a very thin build and short dark hair. The man was described as wearing a loose-fitting shirt and pajama or sweatpants.

The woman reported the incident on April 4 and police investigated to obtain more details before releasing the alert on Friday, said University of Michigan Deputy Police Chief Melissa Overton.

Police continue to investigate and are asking anyone with information to come forward.

Those with information are asked to call the University of Michigan Division of Public Safety and Security at 734-763-1131 or call 911.