WARREN, R.I. — Police say the 24-year-old son of a Rhode Island couple found buried in their backyard cesspool killed his parents with a garden hoe.

James A. Soares was charged Sunday with the murders of 60-year-old James A. Soares Sr. and 53-year-old Marian Soares. He's being held until his arraignment today.

Major Steven O'Donnell says police believe Soares killed his parents July 9. They were reported missing six days later.