MORRISTOWN -- A North Carolina man called police last month to report his involvement in the double murder of his girlfriend and mother, 911 recordings reveal.

Cary, N.C. police say 34-year-old Brandon Lee, formerly of Morristown and New Brunswick, admitted in a 911 call on Dec. 20 to killing his 58-year-old mother, Christa Lassiter Lee, also formerly of Morristown, and his 28-year-old girlfriend, Krystal Juell Hylton.

911 recordings obtained by NJ Advance Media detail the casual conversation between Brandon Lee and a dispatcher.

Note: Some identifying information was removed from the 911 call by police, while NJ Advance Media edited the recording to remove long pauses.

"Who was killed?" asks a dispatcher.

"My mother... she attacked me with a knife and then I killed her," Lee answers.

"And where are you at now?" the dispatcher asks.

"Now I'm at my girlfriends and she tried to leave me and so I ended up killing her too," Lee responds.

Police say 28-year-old Krystal Juell Hylton was also killed.

Lee is later heard telling the dispatcher that he choked both of the woman and needed the confidence to call police.

"I just been drinking until I get the nerve to turn myself in," Lee said.

Lee later tells the dispatcher that he is ready for "the chair...or whatever they have to do."

Lee also expresses concern for a dog who is home alone.

Christa Lee was a graduate of Morristown High School who served in the military overseas and later held administrative positions at General Motors and Wyeth Healthcare, according to her obituary.

Police received the call at around 3:40 p.m. on Dec. 20, and quickly confirmed the deaths of the two women.

Brandon Lee was charged with two counts of murder and faces life in prison or the death sentence, police said. He was transported to Wake County Public Safety Center in Raleigh for processing at the time. He is scheduled to appear in court this week.

Fausto Giovanny Pinto may be reached at fpinto@njadvancemedia.com. Follow him on Twitter @FGPreporting. Find NJ.com on Facebook.