An Arizona man set for trial this week is believed to be the first person the US government has tried on terror charges linked to the Islamic State group.
Abdul Malik Abdul Kareem is accused of providing the guns used in an attack at a controversial cartoon contest deemed blasphemous to Islam in Texas last year.
Investigators say he and the two shooters watched videos depicting violence by jihadists, tried to get pipe bombs, planned the May attack in suburban Dallas and researched travel to the Middle East so they could join Islamic State fighters.
Kareem denies the allegations.
The other two men brought semiautomatic rifles and an Islamic State flag to the contest featuring cartoons deemed offensive to Muslims. They died in a shootout with police before hurting anyone attending the event.
