OROVILLE (CBS13) – Skeletal remains found behind an Oroville casino belong to a Butte County man missing since 2006, the sheriff’s office said.

Butte County sheriff’s deputies were called out to an area behind Feather Falls Casino on Monday after workers clearing brush for fire safety found bones. Deputies confirmed what appeared to be human skeletal remains.

On Wednesday, those remains were identified through dental records as belonging to Ronald Earl Bonner Jr. of Biggs. Bonner was reported missing to the Butte County Sheriff’s Office on Oct. 11, 2006. He was last seen leaving his Biggs home on Sept. 20, 2006.

Bonner was 22 when he went missing.

His disappearance has always been considered suspicious, according to the sheriff’s office. The remains are being examined by forensic anthropologists. No cause of death was immediately released.