DALLAS (CBSDFW.COM) – A man climbed into the window of a Jack in the Box drive-thru in Dallas and shot a worker who refused to give him cash early Wednesday morning, police say.

Police say the incident happened just before 3 a.m. at the fast food place near Camp Wisdom Road and Interstate-35.

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According to police, the suspect climbed through the window and demanded the worker open the cash drawer. When the worker refused, the suspect shot him.

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The suspect then fled the scene. A description has not yet been released as the investigation continues.

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The worker was taken to the hospital with non-life-threatening injuries, police say.