Police: Man robbed woman at knifepoint, stole $120

Police are looking for a man they say robbed a woman at knifepoint earlier this month.
The incident happened inside the East 161st Street Yankee Stadium train station on Dec. 21.
Police say the suspect approached a 41-year-old woman who was purchasing a MetroCard from a vending machine and stole $120 from her hand.
They say the suspect then ran off.