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ENCINITAS, Calif. — A man defending his wife shot his son in North County, according to the San Diego County Sheriff’s Department

It happened around 5:45 a.m. Monday at a home on Greenlake Drive, in the community of Cardiff, San Diego County Sheriff’s Lt. Nancy Blanco said.

A man in his 50’s was threatening his mother, a woman in her 70’s, with a knife, deputies said. The woman screamed for help and her husband came to her aid. Her husband, a man in his 70’s, shot the son in the torso, according to deputies.

Deputies found a victim suffering from at least one gunshot wound when they arrived, Blanco said. He was rushed to the hospital and is currently in critical condition.

Detectives are waiting for a warrant to go into the house and investigate.

The woman was not hurt in the incident.