From HSToday:

Not surprisingly, the ninth issue of the Islamic State’s (ISIS) digital English-language magazine, Dabiq, heaped praise on Nadir Soofi and Elton Simpson – the two radicalized Muslims and Phoenix, Arizona roommates killed in a May 3 firefight in Garland, Texas for their attempt to storm into the Curtis Culwell Civic Center in Garland, Texas with long guns to kill as many attendees of the Stop Islamization of America and the American Freedom Defense Initiative where a contest for the best cartoon of Prophet Muhammad was being held. Homeland Security Today reported early on that evidence quickly was unearthed tying the two shooters – especially Simpson – to radical Islamist social media – including a suspected ISIS member in Syria.