DALLAS (CBSDFW.COM) – A clerk at a North Texas convenience store was shot and critically wounded during a robbery attempt early Thursday morning.

The incident happened just before 3:00 a.m. at a 7-Eleven store off the LBJ Freeway at Audelia Road.

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Surveillance image of robbery, shooting suspect (DPD)

According to police, customers who had walked into the store found the injured clerk.

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Officers were able to review surveillance video and confirmed a robbery had also taken place.

So far investigators have released no information about the suspects and no arrests have been made.

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The clerk remains hospitalized after being transported in critical condition.