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Police are looking for the masked man who opened fire at an Edison, NJ gas station, killing the store clerk.

EDISON, N.J. — A gas station employee was shot and killed during a robbery in New Jersey early Thursday, officials said.

It happened at the Speedway Gas Station in Edison at about 4 a.m.

Authorities said a man entered the gas station and held up the employee, John Bertram, with a handgun. The clerk removed money from the register to the suspected robber, who then opened fire, shooting Bertram.

Bertram, 38, was pronounced dead at the scene.

Another employee was inside the gas station at the time of the incident, but was not hurt, said authorities.

The mayor of Edison said they are working with detectives to find the person responsible for this “heinous crime.”

“My thoughts and prayers, and those of the Edison community, are with the victim’s family,” said Mayor Thomas Lankey. “I have confidence in our police department’s investigative capabilities – working alongside county prosecutor’s detectives – to find and bring the perpetrator of this heinous crime to justice.”

The suspected shooter is described to be a male with a slim build and was last seen wearing a mask gloves, jeans and a red/maroon sweatshirt.