A Tucson woman used a steak knife to fatally stab her partner Friday night, police said.

Rene Lynne Kemp, 40, is facing a charge of first-degree murder in the death of the man with whom she was living, Sgt. Chris Widmer,a spokesman for the Tucson Police Department, said in a news release.

Police were called to a home in the 2300 block of South Saddleback Avenue at East Golf Links Road about 10:45 p.m. When they arrived, they found a 44-year-old man dead.

Kemp, two children she had with the victim and a male friend of the victim were at the home when police arrived, Widmer said.

Detectives "determined that the victim and (Kemp) had a domestic relationship and lived in the home together with their two children," Widmer said. Earlier in the night, Kemp and the victim had an "altercation" and the victim called a friend to pick him up.

"After the friend arrived, the victim began packing some belongings to leave for the night," Widmer said. That's when Kemp "went to the kitchen, armed herself with a steak knife and stabbed the victim in the chest before he could leave. The victim struck (Kemp) several times after being stabbed, causing her injuries."

Kemp was taken to a hospital with minor head injuries before police booked her into the Pima County jail.

The victim's name has not been released.