http://www.cnn.com/2003/US/Northeast/09/02/pizza.bomb/index.html
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Wells, 46, was killed Thursday afternoon when a bomb attached to the collar exploded after a bank robbery. Wells had told police he had been forced to rob the bank.
After the robbery, Pennsylvania State Police stopped Wells, handcuffed him and sat him down on the ground, safely away from others. Police then called a bomb squad, but the device exploded before bomb technicians arrived, killing Wells.
A task force of federal, state and local investigators is looking into whether Wells was a hostage or willing participant, said Cpl. Mark Zaleski, a Pennsylvania State Police spokesman.
The collar around Wells' neck included a series of locks near his throat and was "obviously designed by the individual who intended to affix it," Rudge said.
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