What we know about the terrorist attack, aftermath at the Boston Marathon

What we know about the terrorist attack, aftermath at the Boston Marathon
Kacey Coffenberry/CNN iReport

POSTED: Tuesday, April 16, 2013 - 7:24am

UPDATED: Tuesday, April 16, 2013 - 8:08am

Three people died and scores more were wounded in the two bomb blasts that erupted near the finish line of Monday's Boston Marathon, Boston police said.

Of the 154 patients treated in area hospitals, at least 17 were in critical condition and 25 in serious condition. At least eight of the wounded are children.

Other details:

-- Authorities searched an apartment late Monday in the town of Revere, northeast of Boston, and removed items, but would not say how the search might be linked to the investigation.

-- The search took place with consent, so no search warrant was needed, a federal law enforcement official told CNN.

-- "The situation remains fluid, and it remains too early to establish the cause and motivation," the FBI's Boston Division said in a statement asking people to call in with any information, images or details related to the explosions.

-- An 8-year-old boy was one of the fatalities, a state law enforcement source said. He has been identified as Martin Richard, The Boston Globe reported.

-- Eight of the 29 patients at Massachusetts General Hospital were in critical condition late Monday, trauma surgeon Peter Fagenholz said. The most serious wounds "have been combined, complex lower injuries that involve blood vessels, bone and tissue," and several underwent amputations, he said.

-- The bombings resulted in at least 10 amputations and left doctors picking ball bearings out of victims in the emergency room, a terrorism expert briefed on the investigation said.

-- President Barack Obama said Monday he ordered the "full resources" of the federal government to respond to the bombings, and called for increased security around the United States as necessary.

-- The FBI has taken over the investigation's lead role, said Richard DesLauriers, the special agent in charge of the bureau's Boston office.

-- Any event with multiple explosive devices "is clearly an act of terror and will be approached as an act of terror," a White House official said. "However, we don't yet know who carried out this attack, and a thorough investigation will have to determine whether it was planned and carried out by a terrorist group, foreign or domestic."

-- The Pakistani Taliban was not involved in the double bombing, spokesman Ihsanullah Ihsan said Wednesday.

-- Federal law enforcement has been placed on "level one mobilization," U.S. government sources said. "That's equivalent to all hands on deck," one official said. A senior federal official told CNN that teams were on standby to search flights leaving the United States; no team had been activated.

-- Investigators have warned police to be on the lookout for a "darker-skinned or black male" with a possible foreign accent in connection with Monday's bombings, according to a law enforcement advisory obtained by CNN. The man, seen with a black backpack and sweatshirt, was trying to enter a restricted area about five minutes before the first explosion, the notice says.

-- The U.S. Navy has provided a three-person explosive ordnance disposal team based out of Naval Station Newport, Rhode Island, to assist Massachusetts authorities, a Navy official said.

-- One unexploded device was found at a hotel on Boylston Street near the bomb site and another unexploded device was found at an undisclosed location, said Rep. Bill Keating, D-Massachusetts. Keating, a member of the House Homeland Security Committee, called Monday's incident a "sophisticated, coordinated, planned attack."

-- Bomb-sniffing dogs were working the area of the bombings and nearby streets, checking "every construction cone, every Port-A-Jon" to make sure there were no explosive devices left, WHDH-TV in Boston reported.

-- AT&T said Monday evening that it had set up a mobile calling center and phone charging station in the Sheraton Hotel. "In addition, our Wi-Fi network, turned up for the Boston Marathon, is now available to customers of all wireless carriers and will remain on for an extended period of time."

-- Some of the wounded were treated in medical tents that had been erected near the finish line to treat exhausted runners. Others were taken to nearby hospitals. -- In addition to the patients treated at Massachusetts General, 21 patients were treated at Beth Israel Deaconess Medical Center; 20 at Boston Medical Center; 12 at Tufts Medical Center; 31 at Brigham and Women's Hospital; four at Carney Hospital; 18 at St. Elizabeth's Medical Center; and one at Newton-Wellesley Hospital.

-- The eight patients at Boston Children's Hospital were in good to serious condition Monday night. They include:

A 9-year-old girl with leg trauma who underwent surgery;

A 42-year-old parent of a patient is being treated;

A 7-year-old boy who is being treated for a minor leg injury;

A 12-year-old with a femur fracture;

A 2 year-old-boy with a head injury who has been admitted to the Medical/Surgical ICU;

Three other patients in good condition were treated in the emergency department.

-- The American Red Cross sent 100 additional blood products to area hospitals, Red Cross spokeswoman Anne Marie Borrego said.

-- Google's Crisis Response team created a "Person Finder" tool to help marathon runners, their families and friends, and spectators keep track of each other and share information, Google spokeswoman Susan Cadrecha said. The web address is http://google.org/personfinder/2013-boston-explosions.

-- All off-duty Boston police officers were called in to help with the response to the attack, Massachusetts Emergency Management said. Additional security measures were being taken throughout the city, including at Boston's Logan Airport, MEMA spokesman Peter Judge said. The airport remained open, with additional security procedures in place.

-- More than 400 Massachusetts National Guard troops had already been on duty, assigned to help local police keep the route clear for runners.

-- The FAA placed a temporary flight restriction over an area in Boston at the request of law enforcement. The TFR was initially a three-nautical mile radius from the site and extended from the surface to a height of 3,000 feet. The FAA then reduced the radius to two miles. The FAA put a ground stop in place briefly to change the runway configuration at Logan Airport, but lifted it later.

-- A third explosion, at the John F. Kennedy Presidential Library, was determined to have been caused by a mechanical problem, Police Commissioner Ed Davis said. JFK School of Government at Harvard University in Cambridge -- miles from the library in the Dorchester section of Boston -- was evacuated.

-- Boston's Mandarin Oriental hotel was evacuated as a precaution ordered by Boston police, spokeswoman Molly Kinsella said.

-- "This is a horrific day in Boston," Massachusetts Gov. Deval Patrick said. "My thoughts and prayers are with those who have been injured."

-- Obama was briefed by homeland security adviser Lisa Monaco and other members of his senior White House staff in the Oval Office. The president called Mayor Thomas M. Menino and Gov. Patrick to express his concern for those who were wounded and to make clear that his administration is ready to provide needed support as they respond to the incident.

-- Homeland Security Secretary Janet Napolitano "has been notified of the incident in Boston," an administration official said. "At her direction, DHS is in contact with state and local authorities and will provide whatever assistance is necessary in the investigation and response."

-- The Massachusetts Emergency Management Agency activated a Red Cross website to help people who might have been near the explosions but were unable to make a phone call check in with friends and family.

-- Metropolitan Police in Washington were at a heightened level of security, according to D.C. police Public Affairs Specialist Saray Leon.

-- Officials in other cities, including London, Miami, Chicago, New York and Los Angeles, said they were monitoring events and stepping up security.

-- London Met Police Chief Superintendent Julia Pendry said: "A security plan is in place for the London Marathon. We will be reviewing our security arrangements in partnership with London Marathon."

-- The Boston Bruins' home game against Ottawa was canceled for Monday night, with no makeup date determined, the Nation Hockey League said.

-- A number of professional sports teams held moments of silence Monday night.

-- The U.S. House of Representatives stopped debate at 5:09 p.m. to observe a moment of silence on the House floor.

-- Saudi Ambassador to the United States Adel bin Ahmed Al-Jubeir condemned the bombings. "What occurred today in Boston is a heinous crime which contradicts the values of humanity," he said.

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