A timeline of events in the manhunt for the Boston Marathon Bombing suspects:
5:00 p.m. Thursday: The FBI reaches out to the public for help identifying two persons of interest in the Boston Marathon bombings. Images of the suspects are released.
10:00 p.m. Thursday: A 7/11 store near the MIT campus in Cambridge Massachusetts is held up. Initially it was believed that the suspects held up the store but now police say they might have only been there to get gas and some one else held up the store.
Thursday around 10:30 p.m.: an MIT campus police officer is found shot dead in his vehicle near Vassar and Main Street. Authorities say he suffered several gunshot wounds. He was transported to Massachusetts General Hospital where he was pronounced dead.
Shortly after: Police respond to a carjacking by two males on Third Street in Cambridge. A victim was carjacked at gunpoint by the suspect. The suspects kept him in the car for at least a half hour before releasing him at a gas station on Memorial Drive in Cambridge. The victim was not injured.
Police pursued the car into Watertown during with the suspects threw bombs outside the car at police. During the chase police and the suspects exchange gun fire critically wounding one of the suspects.
One MBTA officer was seriously wounded. He has been identified as 33-years-old Richard H. Donahue Jr. He is currently at Massachusetts General Hospital.
Reports say at least one of the bombs found was similar to the pressure cooker bombs used at the marathon.
At 2 a.m. on Friday FBI released a photo of suspect 1 and suspect 2 online.
Friday 4 am: Boston and Cambridge Police confirm that the suspects in the MIT shooting and the chase in Watertown were the same suspects as those believed to be involved in that Boston Marathon bombings.
A short-time later the Middlesex County D.A. says suspect 1 is dead but suspect 2 has escaped and is at large.
A new image of suspect 2 from the convenience store robbery is released.
Around 6:45 a.m. Suspects identified as Russian nationals from Chechnya. They are believed to be brothers. Suspect 2 is identified as 19-year-old Djhokar Tsarnaez.
Around 7 a.m. Norfolk Ave in Cambridge is locked down. One of the two suspects was believed to have lived there.
8:00 a.m.: News briefing with FBI and Gov. Deval Patrick called.
Suspect 1 who was gunned down is identified as 26-year-old Tamerlan Tsarnaev. Suspect 2 who is at large has been identified as suspect 1's brother 19-year-old Djhokar Tsarnaev.
People in Boston, Belmont, Newton, Cambridge, Waltham, Watertown, and Allston/Brighton told to stay indoors with doors locked and not open the door for anyone aside from police officers.
8:30 a.m. SWAT teams going door-to-door in Watertown looking for suspect.
Around 9:30 a.m. UMASS Dartmouth was locked down as it was confirmed that Djhokar Tsarnaez was a student there.
9:45 a.m. The Pine Dale Dormitory where Tsarnaez was residing is evacuated.
10:20 a.m. Connecticut State Police say police in Boston have found a gray Honda CRV, believed to be linked to Dzhokhar Tsarnaev.
10:30 a.m.: The Entire UMASS Dartmouth Campus and it's New Bedford campus is evacuated.
11:30 a.m. Mass. State Police say the two bombing suspects were in the Honda CRV when they carjacked the Mercedes SUV. Each of the brothers drove one of the two vehicles for a short time, but they decided to ditch the Honda and ride together in the Mercedes.
12:30 p.m. Massachusetts Gov. Deval Patrick says the stay indoors request continues, as the search for the suspect is underway. New details have not been released.
Still no suspect in custody.
2:00 p.m. FBI say they are looking for a 1999 Green Honda Civic with a license plate 116GC7
6:00p.m. FBI and Police announce there is still no suspect in custody. The announced they are drawing back tactical teams in Watertown.
6:30 p.m.: Stay indoors ban is lifted. Shortly after the ban is lifted, gunfire breaks out in the same community that was being searched. Police locate Dzhokhar Tsarnaev in a boat parked behind a home.
Around 8:45 p.m.: Dzhokhar Tsarnaev is taken into custody by police. Spontaneous applause breaks out amongst police and observers surrounding the scene.