By CBS13 Staff

GRASS VALLEY (CBS13) — Authorities are investigating a suspicious death after human remains were found with a burned-out car in Grass Valley over the weekend.

Sunday morning, the Nevada County Sheriff’s Office says, they got a report about a burned vehicle off the 12000 block of Amber Street. Deputies responded to the scene and found the vehicle in a grassy area off the road.

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Deputies say human remains were located with the vehicle.

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The scene was then locked down by deputies and several other agencies – including the California Department of Justice, California Highway Patrol, Cal Fire, and anthropologists from Chico State – responded to help investigate.

Exactly what started the fire is unclear at this point. The identity of the person found dead is also unknown.

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No other details about the case are being released at this point, but detectives say it’s being investigated as a suspicious death.