Protesters stood outside NC Detective Agency Friday calling for justice after a North Carolina Central University student was killed last month.

“Justice has not been served because nobody has been arrested,” said Alvarez Rodgers.

UPDATE: ‘I just shot a male,’ 911 caller says after deadly incident involving NC Central student

Rodgers organized the rally in support of NCCU student DeAndre Ballard, 23.

Ballard died after he was shot on September 17 at Campus Crossings apartments, where he lived. 

“DeAndre was a good man,” said Rodgers. “He was very humble he was on his way to great things and they took his life for no reason.”

NC Detective Agency told CBS 17 that one of its guards shot Ballard. The agency says it was justified.

CBS 17 has learned the guard is now back at work.

UPDATE: ‘I just shot a male,’ 911 caller says after deadly incident involving NC Central student

“My heart goes out to the family,” said Durham’s mayor Steve Schewel.

For the first time since the shooting, Schewel, spoke to CBS 17 about what happened.

Schewel says he talked to the city manager, who is in constant contact with the police chief, about Ballard’s investigation.

“It’s terrible,” the mayor said. “I can deeply understand the frustration of the family and friends, they want to know as soon as they can. I really can understand their frustration, but I really have also a lot confidence in Chief Davis that they’re going to do a very thorough investigation.”

 Schewel says investigations involving deadly force take time.

“They’re going to be able to really do a good job at presenting the facts to the district attorney so that he can make a decision about whether or not to have an indictment,” Schewel said.

In the meantime, protesters want Campus Crossings apartments, which houses many NCCU students, to end its contract with NC Detective Agency. The protesters said they want to know the name of the guard and any related video released and that someone should be arrested.

Rodgers said although investigations take time, he will continue to fight.

UPDATE: ‘I just shot a male,’ 911 caller says after deadly incident involving NC Central student

“We’re not going to let the public forget about what happened because we the people, we are in control of our society, not the government, and not the police department, none of that. They work for all of us,” he said.

Some NC Detective Agency employees watched the protest but declined to comment.