CHICAGO (CBS) -- A warning for CTA Green Line riders. Authorities want people to hide their phones.
Chicago police released images of a man who, on December 12, was suspected of approaching a rider on the Roosevelt stop platform and told the person he had a gun.
The suspect took off with the victim's cellphone.
CPD said it is looking for a man who on December 1 allegedly flashed a gun and grabbed a rider's phone while on the train near the Cermak stop.
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