Up to eight U.S. Army officers could face punishment in the case of Fort Hood shooting suspect Army Maj. Nidal Hasan.

The report on Hasan, who is accused in the shootings that killed 13 people at the Texas Army base on Nov. 5, is expected to be released by the Defense Department Friday.

The Associated Press says the report reveals that Hasan's views on Islam became more extreme as his training progressed. Worries about his competence also grew, yet his superiors continued to evaluate him positively. That led to his eventual assignment to Fort Hood.

The report also found that the emergency response on Fort Hood had gaps and sometimes a failure to link emergency response operations on military installations with those in the surrounding communities.

One official said the report does not answer whether intervention by one of Hasan's superiors might have stopped the shootings. But full knowledge or more proactive responses to Hasan's behavior could have either helped him or gotten him fired, an official said.