Oxford police have added new charges against a Fairfield man who allegedly raped a Miami University student last week.

Francisco Naupa Rivera, 23, allegedly entered five off-campus student houses last week. Rivera now faces rape, aggravated burglary, two counts each of burglary and criminal trespass and attempted theft charges.

Police say he entered a home on East Spring Street early Friday morning and touched a sleeping female on her arm, according to Sgt. Jon Varley. Rivera allegedly told the woman he was looking for a male friend and quickly left the house. No men live in the house.

The woman gave a description of Rivera’s car to police, who located it about a block away at a home on East Collins Street. Police found the front door of the home open and a side door ajar. Once they entered the residence, they found Rivera and a woman reported he raped her.

Varley said Rivera first told police he was looking for a female friend and then said he was searching for a male friend. No one in the house knew him.

Police initially charged him with rape, aggravated burglary and burglary.

Police Chief Bob Holzworth urged people to be vigilant about their safety.

“Crime is everywhere, even in a quiet community like Oxford,” he said. “The Division of Police wants to remind all residents that home and personal security begins with locking your doors and windows, particularly at night. This simple step is often enough to dissuade an intruder.”