Tamerlan Tsarnaev and Dzhokar Tsarnaev - are the two men law enforcement officials and the rest of the world have had their eyes focused on for the past 24 hours.
Suspects described as brothers from Russian Caucasus
According to the FBI, the Tsarnaev brothers were behind the Boston Marathon bombings that killed three people and injured more than 180 people.
CNN's Live Blog: Manhunt for Boston Bombing Suspect
Here's what we know:
Campus police officer killed after being shot at #MIT, state police say. on.cnn.com/XUkSuE
— CNN Breaking News (@cnnbrk) April 19, 2013
Officials: Suspect No. 1 in the marathon terror attack is dead. Suspect No. 2 is on the run and considered armed and dangerous.
— CNN Breaking News (@cnnbrk) April 19, 2013
Erin Burnett is live in Boston with the latest in the massive manhunt for Boston bombing suspect, Dzhokar Tsarnaev at 7p and 11p ET on CNN.
#WANTED: Search for 19 yr-old Dzhokhar Tsarnaev continues. Suspect armed & dangerous. Call 1(800) CALL-FBI. twitter.com/Boston_Police/…
— Boston Police Dept. (@Boston_Police) April 19, 2013