ISIS linked to Texas shooting free speech rally, Elton Simpson, Nadir Soofi

“We tell… America that what is coming will be more grievous and more bitter and you will see from the soldiers of the Caliphate what will harm you, God willing,” the Islamic State statement said.

Simpson posted an ominous tweet with the hashtag #texasattack: “May Allah accept us as mujahideen.”

The tweet also said Simpson and his fellow attacker had pledged allegiance to “Amirul Mu’mineen,” which means “the leader of the faithful.” CNN terrorism analyst Paul Cruickshank said that probably refers to ISIS leader Abu Bakr al Baghdadi.

Earlier, Simpson had asked his readers on Twitter to follow an ISIS propagandist.

After the shooting, the same propagandist tweeted: “Allahu Akbar!!!! 2 of our brothers just opened fire.”

Mohammed Art Exhibit event in Garland was targeted in a similar fashion as the Charlie Hebdo attack because the images of their “prophet” is considered blasphemy.

“He was raised in a normal American fashion,” Sharon Soofi said of her son to the press. “Yes, he was very politically involved with the Middle East. Just aware of what’s going on. I don’t know if something snapped or if Elton Simpson was just working on him.”

The duo were roommates and their neighbors “have no clue” what they were plotting. Simpson, who had been convicted of a terror-related charge, Soofi was relatively unknown to federal investigators, a law enforcement official told CNN.

Authorities knew of no indication the two planned to launch Sunday’s attack, another law enforcement official said.