Chapel Hill firefighters responded to the blaze at about 11:07 p.m. at the complex off Homestead Road. Fire and emergency service personnel had the fire under control in a little more than an hour.
Chapel Hill police spokeswoman Jane Cousins confirmed a man's body was found Wednesday. She also said no information about the man will be released until his family has been notified.
Chapel Hill Fire Department Capt. Doug Kelly said the man's body was found in one of the second-floor apartments. He also said officials are still investigating the cause of the man's death.
Two residents from the building were taken to UNC Hospitals to be treated for burns.
The blaze caused fire, smoke and water damage to at least eight apartments, while several others suffered smoke and water damage. No estimate for the extent of the damage is available yet.
The Chapel Hill Fire Marshal Caprice Mellon is teaming up with the N.C. Bureau of Investigation in trying to determine the cause of the fire. The investigation could last several days or even longer, according to a news release.
Kelly said that after investigations Wednesday, the origin of the fire was still unknown. He also said the time the blaze started was unknown.
"The fire was through the roof when we got there, so there's no telling how long it had been burning before we got the call," he said.
Kelly also said there were no sprinklers in the building, but it was built long before they were required by law.