A suspect has been arrested in the murder of an "American Idol' music supervisor and her songwriter husband, police sources confirmed to ABC News. The victims -- Robin Kaye and her husband, Thomas Deluca, both 70 -- were found shot to death in their Los Angeles home during a welfare check on Monday, authorities said.

An “American Idol” music supervisor and her husband were both found dead in their Los Angeles home Monday afternoon.

Officers responded to a request for a welfare check at the home on White Oak Avenue in Encino around 2:30 p.m. Monday, according to the Los Angeles Police Department.