BOSTON (CBS / AP) — A former Massachusetts Institute of Technology student and basketball player from Marin County has pleaded not guilty to entering a Boston University dorm room and sexually assaulting a woman as she slept.

Samson Donick, of Tiburon was held on $10,000 bail at his arraignment Wednesday on charges including aggravated rape.

READ MORE: San Jose Police Chief Details Fatal Shootout With Wanted Felon Following Attempted Carjackings

Prosecutors say the 20-year-old Donick and friends were visiting the dorm in the early morning hours of Oct. 18. Donick and another man allegedly entered several rooms while searching for a friend. Police say the 20-year-old victim awoke to Donick sexually assaulting her.

Donick is no longer enrolled at MIT.

READ MORE: California Jobless Rate Dips To 6.5% In December; Some Bay Area Counties Down To 3% Unemployment

Defense attorney Norman Zalkind says Donick has no prior record and there are “serious problems of proof in this case.”

Donick was ordered to stay out of Massachusetts if he makes bail.

MORE NEWS: Parental Consent Not Needed For Teen COVID Shots Under Proposed State Law

© Copyright 2016 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.