Police were called about 8 a.m. to the Sunoco Gas Station on North Highland Avenue, across from Obama Academy.
Officers were able to speak with the clerk, who suffered wounds to his head from a “blunt instrument,” according to police. He was taken to a hospital in stable condition.
Another man suffered stab wounds. He was found on a sidewalk not far from the gas station. He was taken to a hospital in critical condition.Investigators have not said what led to the altercation.