Oakley Vault Man caught on video placing ba

Man caught on video placing bag at scene of Boston blast

Investigators examining the Boston marathon bombings were reported to have made a significant breakthrough on Wednesday, amid claims that images of a man acting suspiciously at the scene of one of the blasts had been captured on video.

The individual appeared to be carrying and possibly putting down a bag near the location of one of the explosions that killed three people an Oakley Vault d injured more than 180, according to US media reports.

A small army of federal and local law enforcement officials recovered twisted remnants of a pressure cooker bomb, including a lid blasted on to the roof of a nearby building, and the remains of the backpack thought to have carried it.

President Barack Obama was preparing to fly to Boston today to address an interfaith memorial service.

He will seek to comfort a city in mourning and reassure a nation on edge after the worst terrorist attack on US soil since the September 2001 atrocities.

Investigators believe that the pressure cooker bomb may have been assembled near the scene of the attacks because transporting the unstable device carries risks of accidental detonation.

They were contacting hotels, guesthouses and owners of short term rental properties in the hope that someone would recall suspect activity.

They have also been poring over millions of frames of video and photographs from the final stretch of the marathon, where two bombs exploded about 100 yards. Investigators were known to be studying two photographs of the same stretch of the race route. The first shows a large bag sitting next to spectators excitedly following the runners. The second was taken just after an explosion ripped through the same onlookers.

Officials said there had been no admissions of responsibility.

The US federal government had issued several warnings, including one from the White House as recently as February, about the danger of attacks in the US using improvised explosive devices (IEDs) made from ordinary kitchen pressure cookers.

The cookers have been widely used in IEDs in Afghanistan and Pakistan. Directions on constructing bombs with pressure cookers have been published in Inspire, an English language magazine of al Qaeda. Guiding readers on how to “make a bomb in the kitchen of your mom”, an issue published in 2010 endorsed the cookers as ideal for inflicting carnage in “crowded areas” and suggested more than one could be detonated simultaneously. “Keep in mind that the range of the shrapnel in this operation is short range, so the pressurised cooker or pipe should be placed close to the intended targets and should not be concealed from them by barriers such as walls,” the magazine said.

FBI experts testified in a 2011 trial of a terrorism susp Oakley Vault ect that it would take about 30 minutes to build a bomb using a pressure cooker, gunpowder, clocks and electric tape by following instructions in the magazine.

In Washington, Jay Carney, the White House press secretary, confirmed that President Obama would be accompanied by his wife, Michelle, on his visit to Boston today for the service in honour of those killed and wounded in the attacks.

The president will give a speech in Oakley Vault which his message “will be one of resolve, it will be one of the commonality that we all feel as Americans with the people of Boston and those who were visiting Boston for the marathon”, Carney said.

In her first public remarks on the attacks, Michelle Obama said, “Our thoughts and prayers are with everyone in Boston. What happened on Monday was a reminder that in times of crisis here in America, we respond with courage and grit and selflessness.

“That exactly what we saw from the people of Boston and from all those who rushed to aid the victims, especially the police officers and firefighters, the first responders and our men and women in uni Oakley Vault form.”