PEORIA, Ill. (AP) – Authorities say a 21-year-old Illinois man has confessed to killing his parents who have been missing since the weekend.

Peoria County Sheriff Brian Asbell said Monday that Jose Ramirez is charged with first-degree murder in the deaths of Susan Brill de Ramirez and Antonio Ramirez Barron.

Asbell says a relative called authorities late Sunday to the couple’s Princeville home, where deputies found blood. He believes the 63-year-olds were killed Friday.

Twenty-one-year-old Matthew Roberts is charged with obstruction and concealment of a homicidal death in the killings.

Asbell says Ramirez confessed, and that the victims’ bodies are somewhere in rural Henry County.

The couple last reported to work Thursday at Bradford University in Peoria. Brill de Ramirez is an English professor and Ramirez Barron works in the school’s information technology department.