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Police in Pennsylvania are searching for two truck drivers after authorities say they stole more than $3,000 in diesel fuel from a Wawa gas station last week.

The thefts happened in Hilltown Township on the morning of Jan. 11 at a Wawa on Route 131, police said.

The first theft occurred around 7:45 a.m. when the driver of a white flatbed-style truck illegally accessed the control unit of a diesel fuel pump, according to police. The driver bypassed the pay system and pumped out 342 gallons of diesel fuel before driving away.

About an hour and a half later, a white Ford F-150 pickup truck used the same pump and bypassed the pay system, police said. The driver stole 261 gallons of diesel fuel.

flatbed truck stealing gas

Police said a white flatbed truck stole 342 gallons of diesel fuel. (Hilltown Township Police Department)

In total, the drivers stole 603 gallons of diesel fuel worth $3,079.52. 

Police said both trucks were equipped with aftermarket fuel tanks that allowed them to store large quantities of fuel.

Ford F-150 stealing gas

Police said the driver of a white Ford F-150 stole 261 gallons of gas. (Hilltown Township Police Department)

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Both trucks are believed to be connected and worked together to pull off the scheme, according to police.

FILE - In this Tuesday, June 11, 2013 file photo, a motorist puts fuel in his car's gas tank at a service station in Springfield, Ill. Ford said Thursday, Aug. 14, 2013, it will reduce gas mileage estimates for its C-Max hybrid, following a government investigation into consumer complaints that the car's actual mileage was lower, (AP Photo/Seth Perlman, File)

Police said both trucks had aftermarket fuel tanks that allowed the vehicles to steal vast quantities of fuel from the pump. (AP Photo/Seth Perlman, File)

Authorities asked anyone with information about the incident to contact the Hilltown Township Police Department.

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Gas thefts hit a high last year as thieves across the U.S. physically stole gas from pumps or hacked gas retailers’ networks as fuel prices soared.