A 34-year-old man has been arrested in connection with a double homicide investigation at his grandparents’ Glendale home where he had been living for the past year.

Nathaniel Wayne Scheiern, a white man, was arrested July 2 on suspicion of two counts of murder in connection with the death of his grandfather, William Karl Scheiern, 77, and an unidentified woman.

The partially decomposed bodies were found June 28 in the bedroom of the house where William Scheiern lived with his wife, Verna, in the 600 block of Alexander Street.

Nathaniel Scheiern was booked into Los Angeles County Jail, and is being held without bail. He was identified as a person of interest in the deaths shortly after investigators found the bodies, but they delayed talking to him when they discovered he was a patient at Henry Mayo Newhall Memorial Hospital in Valencia, according to the news release.

Scheiern had been involved in a single-vehicle crash off the 5 Freeway on June 25 and was being treated for significant but non-life-threatening injuries.

Investigators believe the couple were killed sometime before the car accident, according to the release. Glendale detectives intend to present their evidence to the Los Angeles County district attorney’s office on July 7.

— Jeanette Marantos