MILFORD (AP) – Police are investigating the theft of a heating fuel truck that was stolen and later found drained of the 2,000 gallons of heating oil and kerosene it was carrying.

The truck was stolen late Tuesday night or early Wednesday from Malenfant’s Fuel & Bottled Gas Co. in Milford, according to the Penobscot County Sheriff’s Department.

When it was found about 3:45 a.m. Wednesday more than 20 miles away in Carmel, the keys were in the ignition, but the 1,650 gallons of heating oil and 350 gallons of kerosene were missing, said Deputy Will Sheehan. He valued the fuel at $3,000.

When the truck was stolen, the keys had been left inside the cab, Sheehan said.