Wearing a covering over his face, Tione Davis, 35, of East Orange, fled with an undetermined amount of cash from the register after the 4 a.m. robbery of the Market Street convenience store on Dec. 11, Detective Lt. Robert Bracken said.
No one was injured, he said.
Morris Plains police arrested Davis on Dec. 20, a day after a chase stemming from another crime. They took him to the Morris County Jail, where he remained Wednesday.
Clifton police charged him with robbery, aggravated assault and various weapons charges -- including being a convicted felon in possession of a firearm.
Bracken thanked the prosecutor's offices from Union and Morris counties, along with local police from Morris Plains, Middlesex Borough and Rahway.
"It was a collaborative effort," the lieutenant said.
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