The Egyptians said he had told them a great deal about the bomb plot under questioning.

But investigators strongly suspect that the brothers played a role in the bomb plot, the officials said.

Prosecutors say the computer contained "devastating evidence" of a bomb plot.

On January 9, 2010, two more men were arrested in connection to the bomb plot.

Nor was he a likely target of a bomb plot.

But by the time the letters were written, prosecutors said, the bomb plot was well on its way.

He was expelled from the University after being arrested and accused of a bomb plot.

No one had an explanation for his involvement in a bomb plot.

After a second major bomb plot was exposed last month, police officials set a new series of meetings with private security managers.

He is not charged with participating in the bomb plot.