Prosecutors have alleged a Los Angeles man killed his son for being gay.
The man, accused of fatally shooting his son outside a home where his wife was found dead, has been charged with one count of premeditated murder as a hate crime.
Shehada Issa, 69, told police he shot his son Amir in self-defence after he discovered his wife's body in their house.
An investigation into Issa's wife's death is ongoing.
The Los Angeles County district attorney's office said Issa previously threatened to kill his 29-year-old son for being gay.
"The murder was committed because of the victim's sexual orientation and because of the defendant's perception of that status and the victim's association with a person and a group of that status," prosecutors said.
Issa was arrested after Los Angeles police found his son's body outside their house in the city's North Hills area. Issa's wife was found stabbed to death inside the house.
Detectives said Issa told officers he found his wife's body in a bathroom.
"He claimed (the son) was armed with a knife, and there was no knife to be found (there). It was a horrible family tragedy," said Detective John Doerbecker.
Authorities allege the father used a shotgun in the attack on his son, the Los Angeles Times reported.
Mr Doerbecker told the Daily News there had been problems between the father and son, including the son reportedly vandalising the home. He said the couple were evicting the son.
Issa was being held without bail pending his arraignment on April 11.
He faces life in prison if convicted of the charge.