A man was arrested this week and accused of plotting an assault on the Pentagon and U.S. Capitol using remote-controlled aircraft armed with explosives.

Rezwan Ferdaus was arrested in Framingham, Mass., after undercover federal agents delivered materials he had allegedly requested, including grenades, six machine guns and what he believed was 24 pounds of C-4 explosive. 

Ferdaus is accused of planning to use three remote control airplanes measuring up to 80 inches (200 centimeters) in length. Ferdaus allegedly planned to pack five pounds (2.27 kilograms) of explosives in each plane, while saving some of it to blow up bridges near the Pentagon.

The planes, guided by GPS and capable of speeds greater than 100 mph (160 kph), would hit the Pentagon and blow the Capitol dome to "smithereens," according to Ferdaus' plan, detailed in the affidavit. Ferdaus then planned a follow-up automatic weapons attack with six people divided into two teams, according to the affidavit.

Prosecutors also accuse Ferdaus of supplying the undercover agents with mobile phone devices he said could be used to remotely detonate explosives.