Cops Make Arrest in Shooting Death of 'American Idol' Music Supervisor Robin Kaye

Cops arrested a double homicide suspect after "American Idol" music supervisor Robin Kaye and her husband were found shot to death inside their Los Angeles home ... TMZ has confirmed -- and it appears the couple came home and surprised a burglar who'd broken into their Encino house.

Law enforcement tells us 22-year-old Raymond Boodarian was arrested on suspicion of double homicide. LAPD detectives believe he has no relationship to Robin and her husband ... and we're told this was an isolated incident. Boodarian is believed to have entered the house through an unlocked door on Thursday afternoon, police said.

Police said when the couple arrived home and discovered the suspect, a confrontation ensued and they were both shot multiple times. The suspect fled on foot, police said. Officers responding to a call for a welfare check on Monday discovered the couple dead inside the house.

TMZ broke the story ... Robin was identified as one of the victims in a double murder inside a home in Encino. The other victim was her husband, Thomas Deluca. Both victims were 70 years old.

Cops conducting the welfare check Monday found blood outside the house. Officers smashed a window to gain entry and found Robin and Thomas in separate rooms, dead from gunshot wounds to the head. Nothing was taken from the home, police said.

Cops had previously been called to the home Thursday after an unidentified suspect was seen trying to gain entry ... a caller reported the suspect may have been armed with a firearm. Neighbors say someone spotted a person hopping a fence and called police ... officers responded but found no signs of forced entry and searched the exterior property before leaving. A helicopter circled overhead but did not find the suspect.