ATLANTA (AP) — Georgia police have unearthed a body entombed in concrete, stuffed inside a plastic storage container and buried in a backyard. They believe the remains could be those of a missing Florida man.

Police in the northeastern city of Winder arrested 31-year-old twins Christopher and William Cormier on Tuesday, a day after the body was found. They were charged with concealing a death. 

Winder police weren’t ruling out additional charges. The Georgia Bureau of Investigation was assisting in the investigation.