After preliminary investigations the bomb that was detonated at the end of the Boston Marathon was determined to be housed in a pressure cooker, according to reports. It was used to conceal the explosive material as well as metal shards, nails and ball bearings in order to inflict as much damage as possible.
A person who revealed the new development in the terror case spoke on the condition of anonymity to the Associated Press because the investigation is still going. They stated the explosives were put in 6-liter kitchen pressure cookers and hidden in bags that were placed on the ground.
The details surrounding the deadly explosions are sparse as investigators have continued to ask anyone who may have taken video or still photographs in the days leading up to or on the day of the event where the bombs exploded to turn them over.
The top FBI agent in Boston vowed "we will go to the ends of the Earth" to find those responsible and to bring them to justice, according to AP.
Two large explosions hit the 2013 Boston Marathon on Monday afternoon, with reports now confirming at least three are dead and more than 170 injured.
The devastating scenes have shown injured people being carried away from the scene of the explosions, which took place near the finish line of the Boston Marathon route.
Witnesses and media sources are reporting that two loud bangs were heard near the finish line, and video footage can be seen at the moment of the explosions with a big fireball seen coming from one of the buildings to the side of the road.
"We started grabbing tourniquets and started tying legs. A lot of people amputated," said Roupen Bastajian, a state trooper from Smithfield, R.I., who had just finished the race when the bombs went off.
Authorities have said they have no suspects in custody, but are following every lead they have.