LOUISVILLE, Ky. (WDRB) -- A Louisville man accused of killing a teenager is speaking out from behind bars.

Anthony Harris admits to pulling the trigger but says the death is not on his hands.

"It's a very scary feeling to know that you just took a life," he told WDRB News on Monday.

Harris has sat behind bars with that feeling since Sept. 12, 2016, the day 19-year-old Mariah Wilson was shot in the head at Liberty Green apartments. 

Last week, police also arrested Wilson's boyfriend, Lamontrez Jackson, in the killing, revealing that the couple actually robbed Harris moments before the shooting.

Harris says they were not alone.  

"It was 'Trezzo' and three other people," he said. "Three males and one female.

"He was talking about a music video that he was going to shoot, and I was supposed to be in it ... He asked me a question to get me distracted, and the next thing I know, I'm getting maced."

Harris says he met Jackson just weeks earlier, and that the chaotic robbery was over guns, including an assault riffle he'd posted pictures of on Facebook. 

Police confirm Harris owned it legally.

"I like guns," Harris said. They are a nice piece of machinery."

Harris says that he was maced and tased along with his girlfriend, but he grabbed another handgun in the midst of the struggle, and the group ran out of the home. 

Next he describes a standoff with him on the third floor balcony and Wilson and Jackson on the ground near a parking garage. 

"Next thing I knew, I saw someone aiming up at me with an assault rifle ... Right after I took shots, I immediately heard three shots back. So I ducked for cover, ran in the house and immediately pointed my gun at the door.

"I waited for police sirens to come, and once police did come, I immediately turned myself in."

Police say they did not find shell casings or bullet holes from an assault riffle on any weapon fired from the ground. Harris is making a castle doctrine defense, protecting his home, but police say the threat was running away. 

Wilson's family is emotionally charged, wanting Harris to pay for her death. But he says he's not sure if he fired the fatal shot. 

"If I were the one, I am terribly sorry. I really am," Harris said. "I hate that this whole thing happened. This whole thing has caused three families' lives to change.

"But I don't feel like I deserve to be here a long time."

Related Stories:

Copyright 2016 WDRB Media. All rights reserved.