UPDATE: At 8:42 PM, NBC News reported that a suspect in the Boston Marathon bombing "was alive" and "in police custody." An ambulance was seen approaching th cordoned-off scene in Watertown and live television reports showed local residents reacting to the news that spread through the crowd.
At 8:45 PM the Boston Police Department tweeted:
Suspect in custody. Officers sweeping the area. Stand by for further info.
— Boston Police Dept. (@Boston_Police) April 20, 2013
Developments late in the day on Friday had news agencies reporting that Dzhokhar Tsarnaev, the remaining suspect wanted in relation to the Boston Marathon bombing, was possibly cornered on a boat in Watertown, Massachusetts.
CBS News live stream:
Boston, Watertown, Cambridge and other area communities were on a 'lockdown' footing on Friday, with public transportation systems shut down and residents being asked to stay in their homes.
News updates via Twitter:
Dramatic events overnight in Boston followed the FBI's release of images of two suspects wanted in connection with Monday's bombing of the Boston Marathon.
As a live blog from the Boston Globe reports:
To recap for those just waking up: One suspect from Boston Marathon blasts is dead, the other is at large. One MIT police officer is dead, and a transit police officer is wounded. Vehicle traffic in and out of Watertown is halted. Police have advised residents of Greater Boston to stay home. MBTA service has been shut down. Universities are announcing closings for the day. This is a developing story.
Al-Jazeera described how events unfolded in Cambridge and Watertown:
The Huffington Post reports:
A violent crime spree across Greater Boston that took the lives of a campus police officer and one of the suspects in the Marathon bombings morphed into a desperate door-to-door search for a man believed to be the second bomber in Monday’s dual blasts.
After a string of explosions and volleys of gunfire that seriously injured a transit officer, police cordoned off much of Watertown, Mass. Residents were ordered to “shelter in place” and not trust anyone they might see other than uniformed officers.
A Massachusetts State Police public information officer told HuffPost reporter Michael McLaughlin, "We believe this to be a terrorist, we believe he came here to kill people."
And AP adds:
The suspects were identified to The Associated Press as coming from the Russian region near Chechnya, which has been plagued by an Islamic insurgency stemming from separatist wars. A law enforcement intelligence bulletin obtained by the AP identified the surviving bomb suspect as Dzhokhar A. Tsarnaev, a 19-year-old who had been living in Cambridge, Mass.
Two law enforcement officials told the AP that Tsarnaev and the other suspect, who was not immediately identified, had been living legally in the U.S. for at least one year.
NBC News reporting includes additional details about the alleged suspects:
The suspect at large early Friday was identified as Dzhokhar Tsarnaev, 19, born in Kyrgyzstan, holding a Massachusetts driver’s license and living in the Boston suburb of Cambridge. He was the suspect in the white hat in surveillance photos from the marathon released by the FBI.
His brother, who was killed in a firefight with law enforcement, was identified as Tamerlan Tsarnaev, 26, born in Russia. He became a legal permanent resident in 2007, the officials said. He was the suspect in the black hat in the FBI photos.
Both men were believed to have military experience, and to have entered the country with their family in 2002 or 2003, when the family sought asylum. The nature of the military experience was not clear.