Updated 06/19/11 – 3:30 p.m.

CHICAGO (CBS) — A clerk at an Englewood convenience store was shot and killed Saturday night. It was the second time in six years that an employee of the store was shot and killed there.

Four teenagers entered Max Food Mart at 1137 W. Garfield Blvd. at about 8 p.m. and shot the 48-year-old employee in the back, officials said.

Asad Ahmuhanna, of Palos Park, was taken to Mount Sinai Hospital in critical condition, police said. He was pronounced dead at 9:08 p.m. at the hospital, according to the Cook County Medical Examiner’s office.

Police said the shooting appears to be a robbery.

Wentworth Area detectives are investigating, but nobody was in custody as of Sunday afternoon.

Ahmuhanna was the second store employee to be shot and killed while working at Max Food Mart since 2005.

In October 2005, Ali Kuawar was shot and killed at the same store.

In similar circumstances to Saturday’s shooting, three men wearing black hooded sweatshirts were seen fleeing the scene of the 2005 shooting. Police said at the time that nothing was stolen from the store.

Both Kuawar and Ahmuhanna were natives of Jordan.

(The Sun-Times Media Wire contributed to this report.)

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