The other suspect behind the bombings, Tamerlan, 26, the elder brother of Dzhokhar, was killed early Friday morning after a shootout with police in Watertown after they were chased by the police all the way from Massachusetts Institute of Technology campus where they shot dead a policeman and also injured another policeman during the case.
Police said they had taken Dzhokhar into custody on Friday night, after a day of intense gunfight and searching that shut down life across greater Boston.
The police surrounded a boat located behind a home in East Watertown, a short distance away from where Dzhokhar, 19, was last spotted. Authorities said they believed the suspect was inside the boat, which had been covered in a tarp. TV reports said that the police personnel were heard calling Dzhokhar's name, inviting him to surrender.
US President Barack Obama later thanked the security personnel for catching hold of the two suspects by putting their lives at risk and assured all help to the people of Boston to overcome the strain they had undergone over the last few days.