The Latest on prophet cartoon case: Islamists hold service for gunmen slain in Texas attack

A Garland School District security guard patrols the Curtis Culwell Center parking lot Tuesday, May 5, 2015, in Garland, Texas. A man whose social media presence was being scrutinized by federal authorities was one of two suspects in the Sunday shooting at this location that hosted a cartoon contest featuring images of the Muslim Prophet Muhammad. The Islamic State group on Tuesday claimed responsibility for the attack. (AP Photo/LM Otero) (The Associated Press)

A Garland School District security guard patrols the Curtis Culwell Center parking lot Tuesday, May 5, 2015, in Garland, Texas. A man whose social media presence was being scrutinized by federal authorities was one of two suspects in the Sunday shooting at this location that hosted a cartoon contest featuring images of the Muslim Prophet Muhammad. The Islamic State group on Tuesday claimed responsibility for the attack. (AP Photo/LM Otero) (The Associated Press)

A delivery truck is parked in front of the Curtis Culwell Center parking lot Tuesday, May 5, 2015, in Garland, Texas. A man whose social media presence was being scrutinized by federal authorities was one of two suspects in the Sunday shooting at this location that hosted a cartoon contest featuring images of the Muslim Prophet Muhammad. The Islamic State group on Tuesday claimed responsibility for the attack. (AP Photo/LM Otero) (The Associated Press)