BRECKENRIDGE HILLS, Mo. (AP) – Police are investigating whether a man charged in the attack of a Breckenridge Hills man is also connected to a house fire that killed the victim’s brother.

The St. Louis Post-Dispatch reports (http://bit.ly/1lf5MMS ) that 53-year-old Brian Westfall was critically injured after being stabbed in his bed early Saturday. The man charged in the incident, Paul Hunott, allegedly returned to the house with blood on his clothes and threatened to kill 51-year-old William Westfall.

Hunott was arrested Saturday and later released.

Firefighters found the Westfalls’ house on fire around 3 a.m. Sunday. William Westfall was pronounced dead at a hospital.

Hunott was arrested again Sunday and charged in the attack of Brian Westfall. He hasn’t been charged in connection with the fire, but authorities say he’s a suspect.