An alleged Iranian hit squad used $27 portable radios to hide at least five bombs that Israeli and American authorities say they intended to use against Israeli targets in Bangkok, Thailand.

Exclusive photos of one undetonated bomb, obtained by ABC News, show the inside of the radio packed with tiny ball bearings and six magnets. Bomb experts say the magnets indicate the bomb was designed to be stuck to the side of a vehicle.

A surveillance photo of one of the alleged hit squad members, identified as an Iranian national named Saeid Moradi, shows him holding a radio in each hand.

According to authorities, a bomb exploded in the Bangkok house where Moradi and two other Iranians had been staying. After the blast, Moradi attempted to hail a cab. When the driver refused to pick him up, he allegedly threw a bomb, injuring four bystanders.

READ MORE: ABC NEWS