The masked man who attempted to sexually assault a woman in a Rice Hall bathroom 10 days ago also robbed her, according to police documents.

The female staffer reported that the suspect punched her in the eye and mouth before he stole her earrings, ripped open her clothes and fled, according to Metropolitan Police documents. Security has heightened in the building, which houses top administrators, since the Dec. 4 incident.

University spokeswoman Michelle Sherrard said a guard would remain in Rice Hall’s lobby weekdays from 5 to 9 p.m.

Employees and students must present their GWorld cards and visitors must provide their names and the name of the office they are visiting. Staffers received an email the day after the attack to implement a buddy system.

The victim reported that she was inside the bathroom when the lights suddenly turned off. When she went to turn them back on, the suspect came up from behind and attacked her, covering her mouth, according to the documents.

“Wait 10 minutes before leaving the bathroom,” he told her, according to the documents.

The victim did not file a police report for sexual assault. She could not describe the 5’7″ man, cloaked in a mask or scarf, in more detail due to the darkness.

Sherrard said MPD is leading the investigation.