Lt. Kevin Gunter says Chapel Hill Police were called to the frat house on South Columbia Street around 1:30 p.m. Monday.
"When officers arrived they were let into the basement area where they saw several fraternity brothers actually had tackled and were holding an individual down," Gunter said.
The victim, a 39-year-old cook, told police the suspect, Troy Watson, knocked on a basement window.
"When she went to the door, the person first said that he was there to do some work at the fraternity and pushed his way in," Gunter said.
Police say Watson then grabbed the victim and forced her into a bathroom.
"She called out to the fraternity members someone heard, they responded and they were able to subdue the suspect before we arrived," Gunter said. "The victim did suffer some bruising, but she was not injured significantly."
UNC junior Sarah White says she is shocked to hear that a 34-year-old homeless man is accused of attacking a woman in broad daylight.
"There's sometimes some sketchy people, but they don't ever really seem threatening," White said.
Watson is being held on a $100,000 bond. He's facing several charges, including felony kidnapping.