FULLERTON (CBSLA) — Police were investigating after a body was found wrapped in cardboard, plastic wrap and duct tape inside of an abandoned U-Haul at a Fullerton storage facility.

Fullerton police responded to the 2200 block of East Orangethorpe Avenue after receiving reports of a decaying body at the facility around 2:30 p.m. Wednesday afternoon.

Police said the person who rented the truck in Anaheim never returned it. The company then located the truck on a street in Anaheim and brought it back to the Fullerton facility.

“After they recovered the truck, they brought it here to the Fullerton location to do an inventory of the contents of the truck,” Sgt. Shane Carringer, of the Anaheim Police Department, said. “During that inventory search, they discovered what they believed to be human remains, and it has been confirmed that it is human remains.”

The body was carefully loaded into an Orange County Coroner’s van and was taken to the crime lab along with the truck.

“We are not calling it a homicide yet,” Carringer said. “It’s obviously a suspicious death, and the circumstances in which the body was found are certainly suspicious, but we’re going to treat it as if it could potentially be a homicide.”

Police said they would not know if there were suspects or if the death was a homicide until they identify the body and piece together what happened.

“Detectives will piece together everybody who was in possession of the truck and the timeline that this truck was out and who had it and where it was,” Carringer said.

Police remained at the storage facility throughout the night.