A Casper man has formally charged with stabbing his son-in-law during an argument.

Forty-five year old Everett Hartshorn is facing one count of aggravated assault.

Investigators say just after Thanksgiving, Hartshorn and the victim, Tyson Peterson, who is his son-in-law, were having an argument outside of Eagle Bowl on North Durbin Street in Casper.

Hartshorn told officers that he and Peterson had been drinking earlier.

The report says, Peterson later put a knife on his (Hartshorn’s) throat and Hartshorn responded with his own knife and stabbed him in the abdomen.

But Hartshorn claims he was trying to wrap his arms around the victim’s shoulders to calm him down.

Witnesses told investigators that Hartshorn lunged at Peterson.

Hartshorn is being held on $25,000 bond awaiting trial, and could face up to 10 years in prison, if convicted.