[Updated from 4.54 pm to 5.22 pm]
This is the most vivid, chaotic and frightening video so far of the Boston explosion, as it happened.youtu.be/046MuD1pYJg
— Jim Roberts (@nycjim) April 15, 2013
BREAKING: TPM has confirmed a 3rd explosion at JFK Library.Boston PD says no injuries.editors.talkingpointsmemo.com/archives/2013/… via @tpm
— Josh Marshall (@joshtpm) April 15, 2013
Via my sister who works at JFK Library: small mechanical fire in new addition, everyone got out safe.
— Zach Green (@140elect) April 15, 2013
Seeing many tweets saying Library incident was unrelated/mechanical.We’re going on statement via phone from Boston PD.
— Josh Marshall (@joshtpm) April 15, 2013
Boston Police confirm two bombs were placed in trash cans at finish line. A third unexploded bomb was discovered. via @weei #bostonmarathon
— Richard Hall (@_RichardHall) April 15, 2013
A very, very graphic photo ending the @in_focus slideshow from Boston. Please use caution: bit.ly/15gtFJP
— Andrew Katz (@katz) April 15, 2013
RT @passantino: AP: Cellphone service has been shut down in the Boston area “to prevent any potential remote detonations of explosives.”
— WhiteHousePressCorps (@whpresscorps) April 15, 2013
Terrorism in purest sense RT @ap: BREAKING: Boston police commissioner urges people to stay indoors, not congregate in large groups
— Patrick Galey (@patrickgaley) April 15, 2013
NYPD has stepped up security at strategic locations & critical infrastructure, including subways: bit.ly/11bbwaT
— Mike Bloomberg (@MikeBloomberg) April 15, 2013
Couple just reunited. twitter.com/megansarahj/st…
— Megan Johnson (@megansarahj) April 15, 2013
For families in search of loved ones:1-617-635-4520 #BostonMarathon
— Ann Curry (@AnnCurry) April 15, 2013
A team of Newtown parents who were running the Marathon in tribute to the victims of the Sandy Hook massacre are reportedly safe.
— Michael Skolnik (@MichaelSkolnik) April 15, 2013
#heroes MT @nbcsn: Reports of Marathon Runners that crossed finish line, continued to run to Mass General Hospital to give blood
— Andrew Kaczynski (@BuzzFeedAndrew) April 15, 2013
Def a good time to make a point about abortion RT @jrubinblogger Not writing on Boston. It is a local crime story for now.
— Dan Amira (@DanAmira) April 15, 2013
Oh my fucking God, Jane Harman is speculating about a link to AQAP’s Inspire magazine. Facts first please.
— attackerman (@attackerman) April 15, 2013
CNN speculates that “right wing extremists” may be responsible bit.ly/YY4x6I Shameful. Simply shameful.
— toddstarnes (@toddstarnes) April 15, 2013
Someone who works for Fox actually tweeted “Kill All Muslims” in response to Boston rightwingwatch.org/content/erik-r…
— Zack Beauchamp (@zackbeauchamp) April 15, 2013
First tweet reax here.
The Dish 