Boston police have the entire city of Boston, as well as neighboring suburbs Cambridge, Brookline, Newton and Watertown on lockdown as they continue their manhunt for Dzhokhar Tsarnaev.
Tsarnaev is one of the suspects in the Boston Marathon bombing and is still at large and remains armed and extremely dangerous.
His older brother Tamerlan is dead following a shootout late Thursday that left one Massachusetts Institute of Technology police officer dead after the brothers robbed a gas station and hijacked an SUV in Cambridge.
