Allentown police are investigating a robbery and stabbing that occurred at 9:30 a.m. Tuesday at a Gulf gas station at 15th and Gordon streets.

A male entered the gas station, approached the clerk and stabbed him, before leaving with unknown stolen items.

Asst. Police Chief George Medero said police arrested Ali Zumar, 45, not long after the robbery. He was facing arraignment Tuesday night on aggravated assault and robbery charges.

 The unidentified clerk was taken to a local hospital, where that person remains in critical but stable condition.