Updated

The Latest on the trial of an Arizona man accused of planning an attack on an anti-Islam event in Texas (all times local):

11:15 a.m.

Prosecutors suggest an Arizona man charged with plotting an attack on an anti-Islam event in Texas could have been more forthcoming to investigators about Internet videos showing people being beheaded.

Abdul Malik Abdul Kareem took the witness stand for a second day Wednesday at his trial on charges that he planned the attack in a Dallas suburb.

Two of his friends, Elton Simpson and Nadir Soofi, were killed in a gunfight with police after showing up to the event with guns and planning to shoot it up.

Kareem was asked why he never told investigators that Simpson had been watching beheading videos. He said investigators never asked about the videos, so he didn't offer up the information.

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3 a.m.

An Arizona man accused of plotting an attack at a Prophet Muhammad cartoon contest in Texas faces a second day of tough questioning from a prosecutor about his knowledge of the shooting.

Abdul Malik Abdul Kareem took the witness stand Tuesday at his trial on charges that he planned the attack in a Dallas suburb.

He insisted he knew nothing beforehand about the attack and testified about two friends who were killed in a police shootout outside the event.

Kareem underwent questioning about whether he was told that his two friends, Elton Simpson and Nadir Soofi, were planning to attack an Arizona military base.

Kareem initially said a mutual friend vaguely mentioned such a plan, but Kareem later said he wasn't paying attention when the comment was made.