(CNN) -- — The Boston area is on lockdown. Police are combing the streets of Watertown searching for a second suspect in the deadly Boston Marathon bombing Monday. He's identified as 19-year-old Dzhokhar Tsarnaev. Police say his 26-year-old brother, the other bombing suspect, Tamerlan Tsarnaev was shot and killed early Friday.
Officers are going door-to-door, Amtrak, subways, schools and businesses in the area are shut down as police hunt for the suspect. One police officer is dead and another was seriously wounded following what started as a shooting on the MIT (Massachuets Institute of Technology) campus and car-jacking Thursday night that police say the two suspects were involved in. That lead to a police chase but ended in that deadly shootout with police when Dzhokhar Tsarnaev was killed. The
Tsarnaev brothers are accused of setting the bombs at the Boston Marathon Monday that killed three people and injured more than 175 others