Allanmon Mavumkal surrendered to authorities Sunday and went before a judge in federal court in Lower Manhattan Monday.
Mavumkal was charged with one count of Hobbs Act robbery, a federal charge that carries a maximum sentence of 20 years in prison.
Mavumkal surrendered after police distributed surveillance video of his robbery on Sept. 21, when he hailed a livery cab in the Bronx and directed the driver to a particular location.
Upon arriving at the drop-off location, Mavumkal threatened the driver with a large knife, ordered the driver out of the cab, and then drove away -- all of which was captured on video from the cab.