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PHOENIX (CBSDFW.COM/AP)A September 15 sentencing date has been set for an Arizona man convicted of supporting the Islamic State terrorist group and helping to plot an attack at a Prophet Muhammad cartoon contest in North Texas.

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Abdul Malik Abdul Kareem, an American-born Muslim convert, was accused of providing the guns used at the event at the Curtis Culwell Center in Garland in 2015 and hosting two friends who were Islamic State followers at his home to discuss the upcoming attack.

The two Islamic State followers died in a police shootout and a security guard was wounded May 3, but no one else was injured.

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Prosecutors say Kareem also went target-shooting in the remote Arizona desert with two men killed in a police shootout outside the contest, Elton Simpson and Nadir Soofi.

Kareem testified that he had no knowledge beforehand about the attack.

The verdict marked the second conviction in which a person was tried in the U.S. on charges related to the terrorist group.

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