But the examination by torture continued, so desperate was Peter to uncover any possible collusion.

The investigation began after computer makers complained about possible collusion in the memory equipment market.

Does this indicate possible collusion, or training between cartels and terror groups?

And the Justice Department has started an investigation of possible collusion among some of the biggest private equity groups.

"I think that justifies a much broader investigation into possible collusion, price gouging and antitrust violations."

But for Ms. Harvey and her colleagues, the turnabout raised the question of possible collusion.

Complaints by computer makers of possible collusion in the memory equipment market led to the investigation.

Jews worried about possible collusion from within the campus, perhaps by an Arab student or university worker who knew the terrain.

They will also try to show that the Police Department's internal investigation of possible collusion was perfunctory at best.

"We certainly hope not," Donald Fehr, head of the union, said when asked about possible collusion.