This article is being updated in realtime as information becomes available.
An MIT campus police officer was shot multiple times and killed on Thursday night. The shooting occurred around 10:30PM near Vasser and Main street (The Stata Building #32). The officer was taken to Massachusetts General, where he died of his wounds.
At 1:15 AM Boston time, there was an additional report of a carjacking, gunfire, and explosions, including grenades in Watertown, Boston. It is not clear if the two events are related.
Homeland security vehicles and heavily armed security personnel are in Watertown, according to The Boston Channel.
Police are asking all people near MIT to stay indoors.
Police are currently searching for suspects. Police stay there are undetonated explosives in the area. They’ve asked people in the area to turn off their cellphones due to fear of cellphone connected bombs.
Police are chasing after Mercedes SUV.
Updates: (Latest first)
8:24 AM Boston time - Dr. David Shoenfeld, a surgeon from Watertown went to Beth Israel hospital in early morning after hearing the shooting, and ended up as the doctor who treated the suspected terrorist who died. Suspects brother also ran him over.
8:11 AM Boston time – Suspects also have an older sister and brother.
8:01 AM Boston time Search may take hours. Entire city of Boston has been asked to stay indoors. Manhunt expanding.
7:52 AM Boston time Marathon bombers are believed to have arrived in the US with their family in 2002-2003
7:52 AM Boston time First suspect is ID’ed as Tamerlan Tsarnaev, 22 (dead)
7:40 AM Boston time - Suspects may be brothers.
7:28 AM Boston time – Suspects lived in Turkey and Kazakhstan before coming to US.
7:06 AM Boston time - Police say Suspects had paramilitary training.
6:50 AM Boston time - AP reports that the name of second suspect identified as “Dzhokhar A. Tsarnaev”, a 19 year old foreign national living in Cambridge, possibly from Chechnya.
5:55 AM Boston time - Police leaving the house.
5:54 AM Boston time - Police entering home on Dexter Street with guns drawn, when no response received in door to door search.
5:49 AM Boston time - Boston police lock down towns around Watertown. All business are to remain closed while manhunt for Suspect #2 continues.
4:17 AM Boston time - Live police conference reviewing the events of the evening. One policeman was seriously injured in the earlier shootout. Police warn residents to not open doors, and drivers to not let anyone into their cars.
4:04 AM Boston time - Boston Police Commissioner confirms that Boston Marathon Suspect #1 is Dead. Search is on for Suspect #2.
3:59 AM Boston time - Boston TV reports that Marathon Suspect #1 is dead and suspect #2 is still at large.
3:58 AM Boston time - Police will be doing a series of controlled explosions. Air horn will blow before explosion to prepare residents.
3:04 AM Boston time - Unofficially police have told pedestrians in Watertown that there are “explosive everywhere” including grenades.
3:02 AM Boston time - Police confirm that only 1 suspect is in custody in Watertown. They are examining connection to Marathon bombing.
2:57 AM Boston time - Police confirm that MIT and Watertown events are connected.
2:49 AM Boston time - Boston Globe says one Boston Marathon suspect is now in custody. Twitter feeds saying second suspect also captured. This has not yet been confirmed by the FBI or the police.
2:21 AM Boston time - Police still searching in Watertown, but the event seems to be winding down.
2:15 AM Boston time - Watertown residents still told to stay indoors.
2:05 AM Boston time - MIT tells faculty/student body that the campus is now safe.
1:58 AM Boston time - 3rd suspect has been released and is not a suspect.
1:56 AM Boston time - Bomb disposal robot onsite in Watertown.
1:51 AM Boston time - Boston Channel in talking to residents report that police spoke with a person who had been in the carjacked vehicle and got away from the carjackers.
1:44 AM Boston time - Police are currently arresting third suspicious person right now in Watertown.
1:43 AM Boston time - Residents report seeing a lightly injured policeman taken away by ambulance. Police are doing searches in the area.
1:37 AM Boston time - Residents in Watertown hear explosion from a controlled explosion.
1:34 AM Boston time - Police are still looking for an “active shooter”, but it is not clear where.
1:30 AM Boston time: Unconfirmed reports are that police now have 2 suspects in custody in Watertown
, but it is not known if they are connected to the MIT shooting. One suspect has been taken to a hospital.