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A 33-year-old man has been arrested for fatally shooting his father on New Year’s Eve after the 54-year-old allegedly killed his son’s bedridden mother, girlfriend and friend in Rowland Heights, the Los Angeles County Sheriff’s Department said Friday.

Deputies responded to reports regarding a “gunshot victim” around 8:38 p.m. Thursday in the 2200 block of Batson Avenue, a department news release stated.

Two men, ages 54 and 27; and two women, 48 and 54; were all found suffering from gunshot wounds and were pronounced dead at the scene. A semi-automatic handgun was also recovered.

The 54-year-old man had fatally shot his son’s bedridden mother, girlfriend and friend, Lt. John Corina told the Los Angeles Times. The motive behind the initial shooting was being investigated.

The man’s 33-year-old son, identified by the Times as Christopher Morey, then wrestled his father to the ground, took the gun, and shot him once, killing him, according to the Sheriff’s Department.

The son called police after the incident, and was arrested for allegedly killing his father. He was held in lieu of $1,000,000 bail.

“We’ll see what the D.A. wants to do,” Corina told the newspaper. “We’re going to book him for what he did — he killed another human being. The district attorney will decide if it was justified.”

Witnesses told investigators all but one of the victims were staying at the residence.

Additional information on their identities was not provided by sheriff’s officials, but a woman who visited the Rowland Heights home after the deadly incident told the Times her son, 27-year-old Ernesto Calzadilla, had been killed.

Anyone with information was asked to contact the Sheriff’s Department’s Homicide Bureau at 323-890-5500. Anonymous tippers could call “Crime Stoppers” at 800-222-TIPS (8477), text the letters TIPLA plus the tip to CRIMES (274637), or visit the website http://lacrimestoppers.org.

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