Authorities have released the names of a father and son killed in a murder-suicide in Walker County.

Walker County Coroner Joey Vick identified the victims as David Michael King, 70, and Brandon King, 38. Authorities said David King shot his son while on a video call with a female relative.

According to sheriff’s spokesman T.J. Armstrong, deputies responded about 2:30 p.m. to a home in Nauvoo in the northwestern part of the county on Highway 5.

When they arrived on the scene, they found Brandon King dead in his bed. David King was clinging to life and later died at a hospital.

According to authorities, David King told, and showed, the female relative that he had shot his son. He then vowed to kill himself if law enforcement showed up at his home.

When a deputy got to the house, he heard a single gunshot. Authorities have not publicly released a motive in the slaying.