They say the suspect has hit a total of five banks, two in Delaware and three in Pennsylvania.
The first robbery happened the day before Halloween at the M-and-T Bank in the Astro Shopping Center in the Newark area.
The second robbery happened in mid-November at the Delaware First federal credit union on Newport Gap Pike just south of Elsmere.
In both robberies, the suspect implied a gun, got away with cash and fled on foot.
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