Cops hunt for armed 'A' train robber

Police are searching for a man who they say has robbed several people at gunpoint on the subway.
In the latest incident, a 19-year-old woman was robbed on the A train in Brooklyn Sunday. Investigators say the same man is wanted for two similar crimes on the A train in Queens.
Anyone with information is asked to call Crime Stoppers at 1-800-577-TIPS.