Prosecutors said Khatallah was among 20 people who stormed the U.S. mission with machine guns and grenade launchers, set it on fire, and later attacked an annex, killing US. Ambassador Chris Stevens and three other Americans — Glen Doherty, Sean Smith, and Tyrone Woods.

But in a big setback to prosecutors, the jury found Khatallah not guilty on charges that his actions led to the deaths of the Americans.

Of 18 counts in the federal indictment, he was convicted of four: destroying U.S. government property, discharging a firearm during a violent crime, and two counts of providing support to a terror organization.