During the alleged plot, undercover FBI agents posed as accomplices who supplied Ferdaus with one remote-controlled plane, C4 explosives, and small arms that he allegedly envisioned using in a simultaneous ground assault in Washington.
However, ''the public was never in danger from the explosive devices, which were controlled by undercover FBI employees,'' the FBI said.
Ferdaus was arrested in Framingham, near Boston, immediately after putting the newly delivered weapons into a storage container, the FBI said.
Authorities described Ferdaus as a physics graduate from Northeastern University who followed al-Qaeda and was committed to ''violent jihad'' since early last year.
Puppet Masters
The biggest question of course, who is behind it?
Could it be that the FBI knows more about this attack than they are letting on? Could they have known about the attack before hand?
Ben is looking back at some recent history in order to look forward in a Reality Check you won't see anywhere else.
On Israel's 65th Independence Day, the US Senate Foreign Relations Committee adopted "Senate Resolution 65," stipulating that the US will assist Israel diplomatically, economically and militarily if the Jewish state is compelled to take military action against Iran "in its defense of its territory, people, and existence."
Senate Foreign Relations Committee Chairman Robert Menendez (D-NJ) and Senator Lindsey Graham (R-SC) sponsored Tuesday's resolution, which garnered a bipartisan group of 79 co-sponsors. The resolution also emphasizes that the US must be committed to preventing Iran from acquiring nuclear weapons.

Why is there no trail of blood? Why is he conscious? And why is the knee so far away from his main body?
Will we ever be able to see how our government deliberately turns our joyous days into tragedies, and now has advanced its criminality into killing innocent people as part of a drill to show us why we have to be frisked, molested or irradiated at every public event we attend?
It's not exactly new stuff, this Boston Massacre Marathon Drill. For those who still haven't gotten the message, the Boston Police have admitted and numerous witnesses have observed that before the bombs that killed and maimed hundreds of happy observers of an innocent road race that the authorities were conducting an anti-terror drill during the race.
The bombs that went off on that sunny, happy spring afternoon prove beyond doubt - and once again, for the hundredth time - that it is our government that are the terrorists, and they're not out to protect us - they're out to kill us - and rob us and enslave us - while they demonstrate this demented need for security as they themselves create the terror.
How many recent examples do you need?

Police and fire departments respond to Sen. Jeff Flakes office after a suspicious letter has been found there.
Inspection by the Postal Service revealed nothing harmful in the envelopes.
The envelopes contained an oily substance, according to Phoenix Fire. Two hazmat teams, FBI, Alcohol, Tobacco and Firearms agents and firefighters responded to the incident.
Phoenix Police said they were told by office staff that the envelopes looked "suspicious." "That's all we know," said Sgt. Tommy Thompson. "(The envelopes) are secured."
This will be the fifth suspicious letter or package sent to U.S. politicians, including President Barack Obama, around the country in two days.

Investigators comb through Boylston Street just beyond the finish line of the Boston Marathon.
The official spoke shortly after several media outlets reported that a suspect had been identified from surveillance video taken at a Lord & Taylor store between the sites of the two bomb blasts, which killed three people and wounded more than 170.
The official was not authorized to divulge details of the investigation and spoke to The Associated Press on condition of anonymity. The suspect was expected at a Boston courthouse under heavy security, the official said.
A news briefing was scheduled later Wednesday.
FBI spokesman Paul Bresson said preliminary tests on the letter to Obama showed evidence of ricin, a powerful toxin that is generally considered to be ineffective as a weapon for mass terrorism.
The letter was sent to Obama on Tuesday, and was intercepted at the White House mail screening facility, according to Secret Service spokesman Brian Leary.
The screening facility is a remote facility, not located near the White House complex, Leary said.
As in Boston Police Commissioner Ed Davis's warning that "This cowardly act will not be taken in stride."
Indeed, "Cowardly" is the epithet being used by political figures across the United States; it was used by an editorial writer in Kansas City Star and a spokesman for the United Maryland Muslim Council in Baltimore.
"Cowardly" is the term being used in messages of support from abroad, from the Prime Minister of India to the Prime Minister of Italy.
After all, what could be more cowardly than for some unknown, unseen, unannounced killer to blow apart and maim innocent men women and children, without any risk to himself.
But, if that be the definition of cowardice, what could be more cowardly, than the now cliché image of the button-down CIA officer agent driving to work in Las Vegas to assume his shift at the controls of a drone circling high over some dusty village on the other side of the world?
But last week in Afghanistan a US airstrike killed eleven children and several women. This Afghan bombing is only one of many that are killing civilians every week.
In Iraq bombs go off in crowded areas regularly. A wave of bombings across the country yesterday left at least 75 Iraqis dead.
And in Syria too, there is a daily repetition of carnage that is killing countless civilians.
Judged by the media coverage, it is hard not to conclude that western lives are valued much more highly than those of people in Afghanistan or the Middle East, and that bombs in the middle of major US cities are regarded as more newsworthy than those in the Afghan countryside or in Baghdad.
Comment: Given that the FBI practically has a hand in all U.S. 'terror plots', it is doubtful in the extreme that the Boston Bombings deviated from that rule:
FBI Organizes Almost All Terror Plots in the U.S.