MAYPEARL (CBSDFW.COM/AP)– Two individuals have been charged with killing an Arlington man whose body may have been found inside an abandoned refrigerator discovered about 50 miles southeast of Fort Worth.

The Ellis County Sheriff’s Department was called to Maypearl around 11 p.m. Tuesday after a father and son found a body inside a refrigerator while using a metal detector.

The medical examiner is conducting an autopsy that investigators hope will reveal the victim’s identity, a spokesman said.

Arlington resident Jerry Roberts, 62, has been missing since May 6, when police conducted a welfare check at his family’s request and found his truck and refrigerator missing.

Arlington Police Department spokeswoman Tiara Richard said officers found blood stains on a chair at Roberts’s home.

Richard said “at least one witness” watched a heated argument between Roberts and his roommate Erin Williams, 38, one day before he disappeared. Williams was also spotted on a Fort Worth convenience store’s surveillance video using Roberts’s debit card, Richard said.

On June 7, Williams and her boyfriend Thomas Dunham 43, were pulled over in Alamosa, Colo. in Roberts’s stolen truck.

Richard said the arresting officers noticed blood in the truck bed and arrested the two. They were charged with murder Wednesday.

“Based on the totality of the circumstances of this incident and interviews with the suspects, Arlington Police investigators consulted with the Tarrant County District Attorneys office and are now proceeding with murder charges,” Richard said.

The two remain in the Alamosa County Jail in Colorado, each with a $500,000 bail.