Investigators weren't sure if the incidents are related to two similar break-ins reported last week.
On Friday, Chapel Hill police said a man entered two homes through unlocked doors in the 300 block of Church Street and Pritchard Avenue between 5:30 a.m. and 6:30 a.m.
In one of the homes, two victims awoke to a man standing in their bedrooms waving a cell phone in their faces. In the other house, the victim woke up to find the man rubbing her leg. In both burglaries, the man ran from the house when the female victims yelled.
The suspect in both incidents was described as a six-foot-tall African-American man with a medium build, very short hair - possibly bald - wearing what was described as a blue or possibly olive green short sleeve shirt.
The latest cases happened Sunday morning. According to an incident report obtained by ABC11, the first break-in was reported at the Mill Creek Condominiums at 700 Martin Luther King Jr. Boulevard around 6:30 a.m.
Student newspaper The Daily Tarheel reported a female student awoke to find a man tapping her leg. The man then walked out of her room and out her unlocked front door. The woman said she waited to report the incident because she first thought it was a person who was mistakenly in the wrong apartment.
The second incident was reported around 7:15 a.m. Sunday. A woman reported waking to find a man touching her leg underneath her bedcovers. She also waited to report the incident.
"In these cases, from what we know now, the homes, doors are all unlocked," explained Lt. Kevin Gunter with the Chapel Hill Police Department in an interview with ABC11. "It has been college female victims."
Both victims reported the intruder was an African-American man of college age.
Police are reminding Chapel Hill residents to lock their doors and windows and report all suspicious activity immediately to police by calling 911.
Anyone with information concerning the identity of the suspect can contact either the Chapel Hill Police Department at (919) 968-2760 or Crime Stoppers at (919) 942-7515. Calls to Crime Stoppers are confidential and anonymous and the caller may be eligible for a cash reward up to $2,000 for information that leads to arrest.