A Marana man arrested in the death of his father told investigators that he was high on methamphetamines and used a martial-arts chokehold on him during a fight at their home, according to court documents.

Jared Patrick, 20, was arrested Wednesday night and faces a charge of second-degree murder in the death of Justin Patrick, 47.

Homicide detectives with the Pima County Sheriff’s Department were also told by Dawn Patrick, Jared’s mother, that her son was mentally ill, documents state.

Dawn Patrick said her son and husband were fighting outside their home, and at some point her husband could not breathe, the court papers state.

When deputies arrived in the 16500 block of West Moore Road, west of North Trico Road, at about 8:30 p.m. Wednesday, they found Justin “on the ground, lying on his back, in front of the shed furthest northwest on the property. Blood was coming from his nose. He was not responsive,” documents state.

Justin Patrick was taken to Northwest Medical Center, where he was pronounced dead.

Dawn Patrick told investigators that on July 1 her son was released from prison after a burglary conviction, court documents state. She also said Jared was mentally ill with bipolar disorder, and may not have been on his medication.

Jared Patrick was captured by deputies about a quarter-mile from his home as he was walking away from the property, the documents state.

Contact reporter Carmen Duarte at azstarnet.com or 573-4104.