SANTA ANA, Calif. — Authorities say a man has been arrested on suspicion of killing his parents and their housekeeper in an upscale Southern California community.

Orange County sheriff’s spokeswoman Carrie Braun said Friday that 64-year-old Richard Nicholson, 61-year-old Kim Nicholson and 57-year-old Maria Morse were identified as the victims who were found dead in a Newport Beach home on Wednesday.

Newport Beach police spokeswoman Heather Rangel says the Nicholsons are parents of 27-year-old suspect Camden Nicholson and Morse was their housekeeper.

Authorities say they were found dead when police made a welfare check at the home in response to a request by officers who had contact with Camden Nicholson at an area hospital.

No charges had been filed against Camden Nicholson early Friday. It was not immediately clear if he had an attorney.