An Iowa State student has been charged with sexual assault and burglary by the Ames Police Tuesday.

David Giera, 20, a junior in mechanical engineering, was charged with first degree burglary and third degree sexual abuse, both felonies, after an incident that occurred about 2 a.m. Tuesday in the 3000 block of Tripp Street. 

A 23-year-old woman told police that her neighbor entered her apartment through an unlocked door. She said she was then sexually assaulted, according to the press release. During the assault, the victim told police she was able to fight the man off and push him out of the apartment.

Giera was arrested in his apartment after the incident.

The victim and her roommate did not know Giera well, but they were acquaintances, Ames Police Sgt. Mark Watson said. 

Reporter Shannon McCarty contributed to this story.