Police also released a sketch of someone they believe could be a possible witness.
The two composites have been circulated and posted throughout campus and also can be found on the Department of Public Safety Web site at http://www.dps.unc.edu.
In the meantime, University police are still following several leads pertaining to Thursday night's robbery.
It remains unclear, however, whether officials are closer to an arrest.
"We're following several good leads," said University Police Chief Derek Poarch on Friday.
An 18-year-old UNC student reported being robbed at gunpoint in his room in Avery early Thursday evening. The victim said the gunman took his laptop computer, cell phone, gold chain and $4 in cash.
Poarch said Friday that the sketch of the second person is someone who police want to talk to for more information about the robbery.
But he would not say if the second person had any affiliation with the crime.
Police describe the second person as a black man in his early 20s, about 6 feet tall, weighing 220 pounds with medium to dark complexion.