Police are searching for a green '99 Honda Sedan in relation to the manhunt for Boston bombing suspect Dzhokhar Tsarnaev.
The vehicle has the Massachusetts licence plate 116 GC7, Boston Police said.
The public have been warned not to approach the car.
Update: Massachusetts State Police said they have now found this vehicle.
Among those terribly injured by the Boston marathon bombs was a dance instructor. Adrianne Haslet-Davis lost her foot in the explosion.
The mother of the two brothers suspected of carrying out the Boston bombings told ITV News they saw last year's race but are innocent.
Boston's marathon bombing suspect Dzohkhar Tsarnaev was charged with an offence that could lead to the death penalty, if he is found guilty.