A jury in the U.K. has found three men guilty of conspiracy to murder in the trans-Atlantic airline "liquid bomb" plot.

Abdulla Ahmed Ali, Assad Sarwar and Tanvir Hussain were found guilty of plotting to kill "persons unknown," but not necessarily on planes.

The prosecutor told jurors during the trial that the men planned to attack United Airlines, American Airlines and Air Canada flights by smuggling liquid explosives onto jets and detonating them in-flight.

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The jury failed to reach a verdict on four other defendants, while a fifth was cleared.

The unraveling of the plot in the summer of 2006 caused travel chaos. Restrictions on the amount of liquid passengers can carry in their hand luggage — imposed in the wake of the men's arrest — still remain in place.

Prosecutors claimed the blasts on the seven planes would have had devastating and deadly consequences on the scale of the Sept. 11 attacks.

The trial lasted five months, including a six week jury deliberation.

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FOX News' Greg Palkot and the Associated Press contributed to this report.