Live blog: Explosions at Boston Marathon via Boston.com.

3rd & 7 37yd

BPD Commissioner: We believe he is a terrorist. We believe he is came here to kill people.

by Jen Peter via twitter 4/19/2013 8:24:26 AM
DAVIS: We are concerned about securing the 20 block area. We believe this is a terrorist that wants to kill people.

by Garrett Quinn via twitter 4/19/2013 8:24:30 AM
Suspect #1 in Boston Marathon bombings has been shot and killed in gunfight with Watertown/Transit police.

by BostonDotCom via twitter edited by Adrienne Lavidor-Berman 4/19/2013 9:04:23 AM
Col Alben confirms suspect at large is Boston Marathon bombing suspect #2. White capped individual.

by BostonDotCom via twitter edited by Adrienne Lavidor-Berman 4/19/2013 9:20:30 AM
Police telling us to stay in place. They will sweep area with a bomb dog "for our safety."

by Dan Adams via twitter 4/19/2013 9:35:29 AM
Bomb sniffing dog here to check press pen. http://pbs.twimg.com/media/BINGi-pCAAAbYTd.jpg

by Dan Adams via twitter 4/19/2013 9:36:47 AM
To be clear: no sense of urgency or imminent danger. Seems purely precautionary.

by Dan Adams via twitter 4/19/2013 9:39:00 AM
Sun is rising in #watertown. Scene still active.

by akjohnson1922 via twitter 4/19/2013 9:39:13 AM
#MBTA is currently suspending all service at request of police. #7News

by 7News via twitter 4/19/2013 9:39:49 AM
WOW RT @BostonDotCom: BREAKING: All mbta service suspended

by Garrett Quinn via twitter 4/19/2013 9:40:05 AM
ALL MBTA service has been suspended. Wow.

by Garrett Quinn via twitter 4/19/2013 9:41:14 AM
RT @NotifyBoston: All MBTA service suspended until further notice. Details: http://www.mbta.com

by akjohnson1922 via twitter 4/19/2013 9:42:10 AM
Dozens of broadcast reporters here on Arsenal St. in Watertown. http://pbs.twimg.com/media/BINH534CcAEIT8H.jpg

by Dan Adams via twitter 4/19/2013 9:42:43 AM
Here comes presser.

by Garrett Quinn via twitter 4/19/2013 9:43:09 AM
All MBTA service has been suspended until further notice

by Boston Police Dept. via twitter 4/19/2013 9:44:06 AM
Curt Schwartz: Governor has suspended all public transportation as a safety measure.

by Garrett Quinn via twitter 4/19/2013 9:46:25 AM
SCHWARTZ: Residents of Watertown and surrounding areas: stay indoors, keep business closed.

by Garrett Quinn via twitter 4/19/2013 9:47:56 AM
All my Allston/Brighton peeps, stay home!! Police say so!

by Jaclyn Reiss via twitter 4/19/2013 9:47:58 AM
All T service closed. Stay away from stations. Stay in your house. Businesses should stay closed. #breaking

by Dan Adams via twitter 4/19/2013 9:48:11 AM
#CommunityAlert: Residents of Watertown reminded to stay indoors as search for 2nd suspect (see picture) continues. http://pbs.twimg.com/media/BINJK4ICAAAfCtk.jpg

by Boston Police Dept. via twitter 4/19/2013 9:48:19 AM
DEVEAU: No traffic in or out of Watertown until further notice.

by Garrett Quinn via twitter 4/19/2013 9:48:39 AM
Shelter in place. No vehicle traffic at all in Watertown. "This situation is grave," said Ed Davis.

by Dan Adams via twitter 4/19/2013 9:48:52 AM
#CommunityAlert: Vehicle traffic in and out of Watertown suspended.

by Boston Police Dept. via twitter 4/19/2013 9:49:25 AM
RT @BostonGlobe: BREAKING: Police: No vehicle traffic in and out of Watertown until further notice

by Cynthia Needham via twitter 4/19/2013 9:49:25 AM
RT @WesleyLowery: The city of Boston is, more or less, being brought to a halt.

by Jaclyn Reiss via twitter 4/19/2013 9:49:31 AM
CORRECTION: not Ed Davis.

by Dan Adams via twitter 4/19/2013 9:49:39 AM
Col. Alben: We believe these are the same individuals responsible for #MITshootings and #BostonMarthon

by Garrett Quinn via twitter 4/19/2013 9:49:39 AM
It's Kurt.Schwartz, director of MEMA.

by Garrett Quinn via twitter 4/19/2013 9:50:01 AM
Hard to see but that's the massive State Police Incident Command trailing backing into Marshall's parking lot. http://pbs.twimg.com/media/BINYVgGCYAAfUBu.jpg

by Dan Adams via twitter 4/19/2013 10:54:30 AM
Someone bright their puppy here. Not sure why. Been here all night. Sight for sore eyes though. http://pbs.twimg.com/media/BINYmprCIAAS34A.jpg

by Dan Adams via twitter 4/19/2013 10:55:40 AM
Lowell, Reading, and Peabody cruisers just flew by press area.

by Garrett Quinn via twitter 4/19/2013 10:56:21 AM
Police from all over the state are here. Just saw cruisers from Peabody and Lowell pass by. I'm sure Watertown appreciates the assist.

by Dan Adams via twitter 4/19/2013 10:56:44 AM
The two Boston bombing suspects are brothers, according to a federal law enforcement official.

by Swati G. Sharma, Things To... 4/19/2013 10:56:50 AM
2 MBTA buses with "STATE POLICE" showing on route display sign. http://pbs.twimg.com/media/BINZaebCcAA9x_D.jpg

by Dan Adams via twitter 4/19/2013 10:59:13 AM
Now a convoy of unmarked State Police vehicles, it appears. http://pbs.twimg.com/media/BINZscNCMAAXfBi.jpg

by Dan Adams via twitter 4/19/2013 11:00:26 AM
RT @taylordobbs: @DanielAdams86 @EmersonCollege Same with Northeastern.

by Dan Adams via twitter 4/19/2013 11:00:57 AM
Not to be outdone, Boston Police also have a bus. http://pbs.twimg.com/media/BINaE67CEAEcgHA.jpg

by Dan Adams via twitter 4/19/2013 11:02:07 AM
RT @EdDavis3: Controlled explosion on Vharles St. in Boston by BPD bomb squad. Do not be concerned.

by Jen Peter via twitter 4/19/2013 11:02:50 AM
Can't stress enough how many police vehicles are here. Literally hundreds, and more arriving by the second. All in Marshall's parking lot.

by Dan Adams via twitter 4/19/2013 11:03:29 AM
Dozens of officers disembark MBTA bus, huddle for apparent meeting. http://pbs.twimg.com/media/BINayIUCMAAgrNI.jpg

by Dan Adams via twitter 4/19/2013 11:05:12 AM
Media lined up waiting for news. http://pbs.twimg.com/media/BINbNo9CMAEIa57.jpg

by Dan Adams via twitter 4/19/2013 11:07:04 AM
For residents in the area of Comm and Charlesgate, police will be conducting a controlled detonation.

by Boston Police Dept. via twitter 4/19/2013 11:08:43 AM
RT @EdDavis3: Controlled explosion on Charles St. in Boston by BPD bomb squad. Do not be concerned.

by Garrett Quinn via twitter edited by Teresa Hanafin 4/19/2013 11:12:12 AM
Tons of motorcycle cops now. http://pbs.twimg.com/media/BINcnkaCIAApYgu.jpg

by Dan Adams via twitter 4/19/2013 11:13:13 AM
#breaking State Police: Norfolk st and Cambridge St in Watertown - suspect might be there. Asking media to leave that area. Dangerous.

by Dan Adams via twitter 4/19/2013 11:14:29 AM