ALLENTOWN, Pa -

A man is without about $50 and his cell phone after an armed man robbed him in Allentown Tuesday night, police say.

The incident happened as the man was walking in the 800 block of Green Street around 11 p.m.

Police said an armed man approached the walker, who pushed him against a fence facing away.

The robber had a handgun, and was joined by two other men.

The three suspects ran away after the robbery, police said.

Allentown police are investigating.