NYPD Seeking Subway Mugger

New York City police are looking for a man described to be in his late 30s who is suspected in a string of subway muggings this year. The muggings have occurred mostly on subway trains that run along the west side of Manhattan. Police say in every attack, the suspect threatens riders by brandishing a knife or pretending to have a gun. Anyone with information is asked to contact Crime Stoppers at 1-800-577-TIPS.