LOS ANGELES (AP) — Los Angeles Sheriff Robert Luna says a man arrested Monday in the weekend killing of a Catholic auxiliary bishop is the husband of the victim's housekeeper and had done work at his home.

Luna says a SWAT team arrested Carlos Medina in the morning at his home in Torrance, about 35 miles (56 kilometers), southwest of Hacienda Heights, where Auxiliary Bishop David O'Connell was killed.

The sheriff says a caller told authorities that Medina, 65, was acting irrationally and had made comments about O’Connell “owing him money.”

O’Connell, 69, was killed Saturday inside his home in Hacienda Heights, an unincorporated community about 20 miles (30 kilometers) east of downtown Los Angeles..

The suspect was arrested in the killing of Auxiliary Bishop David O’Connell, who was found in his home with a gunshot wound and declared dead at the scene, Los Angeles Sheriff’s Deputy Lizette Falcon said.

O’Connell, 69, was killed just blocks from the St. John Vianney Catholic Church, part of his archdiocese, in Hacienda Heights, an unincorporated community about 20 miles (30 kilometers) east of downtown Los Angeles.

O’Connell was found around 1 p.m. Saturday with a gunshot wound. Sheriff’s deputies were called to the area for a report of a medical emergency. Authorities have not said whether the bishop was targeted or if his religion might have been a factor.

O’Connell had been a priest for 45 years and was a native of Ireland, according to Angelus News, the news outlet of the Archdiocese of Los Angeles, the nation’s largest. In 2015, Pope Francis named him one of several auxiliary bishops of the archdiocese.

O’Connell worked in South Los Angeles for years and focused on gang intervention, Angelus News reported. He later sought to broker peace between residents and law enforcement following the violent 1992 uprising after a jury acquitted four white LA police officers in the beating of Rodney King, a Black man.

Nearly two decades later, O’Connell brought the San Gabriel Valley community together to rebuild a mission there destroyed an arson attack. In recent years he also spearheaded Catholic efforts in the region to work with immigrant children and families from Central America.

Sheriff Luna called O'Connell a peacemaker and offered the agency’s condolences.

“He was a peacemaker and had a passion serving those in need while improving our community,” Sheriff Robert Luna said on Twitter.

Neighbors and parishioners left flowers and candles and prayed the rosary next to police tape in Hacienda Heights on Sunday.

Gabriela Gil, who first met O'Connell when she was pregnant with her youngest child, was among those who prayed outside O'Connell's home.

“I’ve never ever felt more understood by anyone in this world,” she said.

The Diocese of Cork and Ross in Ireland, where O’Connell was born, was shocked by the priest’s death. Bishop Fintan Gavin said in a statement that O’Connell “has always maintained his connection with family and friends in Cork” through frequent visits back to Ireland.

The violence was the latest to rock religious leaders in Los Angeles. Two Jewish men were shot and wounded last week by a gunman who authorities said had targeted them for their faith. Suspect Jaime Tran has been charged with federal hate crimes.