LONDON — A Muslim man was convicted today of conspiracy to murder for his role in a plan to blow up trans-Atlantic passenger jets using liquid explosives, a plot that sparked sweeping restrictions for passengers carrying on liquids and gels.

Adam Khatib, 22, was convicted of plotting with Abdulla Ahmed Ali, who in September was sentenced to 40 years in prison for leading a team that planned to down at least seven trans-Atlantic flights in simultaneous attacks officials say would have killed thousands.

Khatib's co-defendant Mohammed Shamin Uddin, 39, was found guilty of possessing materials that could be useful to a person preparing or committing an act of terrorism. Nabeel Hussain, 25, also was found guilty of preparing for terrorism and for possessing several items that could be used for terrorism.

Prosecutors have said all three defendants had been prepared to help Ali, but they also acknowledged they might not have known all the details of the plan.

Authorities broke up the terrorist ring in August 2006.