A man is facing three charges, including second-degree murder and attempted murder, in connection with an incident early Monday morning in Yellowknife.

Kevin Mantla, 36, turned himself in to RCMP Monday morning following a violent attack at an apartment on Lanky Court. When police got to the scene they found a critically injured man and woman, who were both transferred to Stanton Territorial Hospital.

It's alleged Kevin Mantla attacked his former girlfriend, Elsie Mantla, and her partner, Elvis Lafferty, in their apartment.

Elvis Lafferty

Elvis Lafferty was pronounced dead at Stanton Territorial Hospital after a violent attack in Yellowknife Monday morning. (Facebook)

Lafferty was pronounced dead at the hospital, while Elsie Mantla was transported to an Edmonton hospital for treatment.

Her family says she's undergoing surgery today to repair deep lacerations to her arm, and had surgery yesterday to treat stab wounds to her abdomen. The family says she is weak, but in stable condition.

In addition to the charges of second-degree murder and attempted murder, Kevin Mantla faces a charge of aggravated assault in connection with the attack. He has been remanded to custody and is scheduled to appear in court Wednesday morning.

Kevin Mantla has a history of violent behavior, including previous convictions of assault, sexual assault, and assaulting a peace officer.

In 2014, he served about 100 days in jail for breaking a court order to stay away from Elsie Mantla's residence and not to contact her.

Lanky Court violent attack

Police at a residence on Yellowknife's Lanky Court following a violent attack Monday morning. (Mitch Wiles/CBC)