Hosam Smadi, 19, is accused of trying to blow up Fountain Place in downtown Dallas with what he thought was a car bomb.
The man charged with trying to blow up a Dallas skyscraper with what he thought was a car bomb will go on trial next summer.
A federal judge has moved Hosam Smadi's trial to June 7.
Smadi, 19, of Jordan, had been scheduled for trial starting Dec. 7, but the judge found the case was complex and agreed more time was needed to interview witnesses and review evidence.
Authorities allege Smadi parked a truck in a garage beneath a downtown office tower in September. Once he was at a safe distance, Smadi dialed a cell phone he thought would detonate a bomb in the truck, but the device was actually a decoy provided by FBI operatives posing as al-Qaida members, investigators say.