Prophet Muhammad | KERA News

Prophet Muhammad

Stella Chavez / KERA News

A man was sentenced to 30 years in prison Wednesday on charges that he provided support to the Islamic State group by helping two followers carry through on an attempted attack on an anti-Islam event in Texas that resulted in a deadly shootout with police.

Stella M. Chávez / KERA News

A jury has convicted an Arizona man of conspiring to provide support to the Islamic State terrorist group.

Stella M. Chávez / KERA News

Garland police now say SWAT team officers were involved in the shooting that left two gunmen dead outside a Prophet Muhammad cartoon contest Sunday night.

(This post was last updated at 7:51 p.m. ET.)

Two suspects jumped out of a dark-colored vehicle and began firing assault rifles on Sunday at the site of a contest where participants drew the Prophet Muhammad.

A security officer was wounded; his injuries are not life threatening, officials said.

Joe Harn, a Garland, Texas, police officer, said one officer returned fire with his service pistol, killing both suspects.

After two gunmen opened fire at the site of a Muhammad cartoon drawing contest Sunday night in Garland, Texas, the American Freedom Defense Initiative, which organized the event, is once again in the spotlight.

Here are five things you should know about the group.