At least three dead, 130 injured after bombs explode at Boston Marathon

At a Monday night press conference, Gov. Deval Patrick urged Bostonians to be vigilant on their morning commute Tuesday, and to report any suspicious packages to the police. The FBI has officially taken over the investigation, and is treating it as a potential terrorist attack.

Boston Police Commissioner Ed Davis stressed that the police had no suspect in custody yet. “I’m not prepared to say we are at ease at this time,” Davis said, when asked if the area was safe. Authorities found and dismantled five more more explosive devices in the area, according to The Wall Street Journal.

“This cowardly act will not be taken in stride,” Davis said. “We will turn over every rock to find out who is responsible.”

Davis said Boston police were not aware of any specific threat to the marathon before it began. Police said they had no one in custody and no suspects, but the Boston Globe reported that a “person of interest” who was injured in the blast was being questioned at Brigham and Woman’s Hospital Monday night.

Two large explosions, just 50 yards apart, went off at 2:50 p.m. ET, more than four hours into the race. One of the explosions happened near the entrance of the Fairmont Copley Hotel in Copley Square. The blast scattered hundreds of onlookers and runners, and left a bloody scene of injured spectators, including children. Local news reporter Jackie Bruno wrote that she saw some people with their limbs blown off. The Boston Police Department said it is looking for video footage taken from the finish line as part of its investigation. Video footage shows first responders and bystanders rushing to the scene of the blast to help the wounded.

Boston Medical Center took in 20 patients, including two children, most of whom are being treated for “lower leg injuries,” a spokeswoman said. A spokeswoman for Tufts Medical Center said the hospital is treating nine patients for conditions such as shrapnel wounds, ruptured ear drums, and “serious orthopedic and neuromuscular trauma to the lower legs.” At least one patient was as young as three years old.

President Barack Obama warned Americans in a brief statement Monday evening not to jump to conclusions before authorities find out who committed the crime. “We will find out who did this,” Obama said in an appearance in the White House briefing room. “Any responsible individuals, any responsible groups will feel the full weight of justice.” A White House official said the incident is being treated as an act of terror.

NBC News, citing anonymous law enforcement sources, reported Monday that a “small homemade bomb” is believed to be responsible for the explosion. The FAA created a no-fly zone around the area. Cell phone service was shut down in the area, the AP reported, to prevent any remote detonations. Family and friends of marathon runners or spectators can call 617-635-4500 for information on their loved ones.