A United States Army spokesman said Saturday that there is no evidence of “friendly fire” during this week’s deadly shooting at Fort Hood.

Authorities did not believe that any of those killed or wounded were shot by anyone other than the suspect, Maj. Nidal Malik Hasan, Army Criminal Investigation Command spokesman Chris Grey said.

Furthermore, all evidence indicates that the suspect “acted alone,” Grey reiterated. There was “no evidence to contradict that finding” and the investigation is continuing, he added.

According to the post’s public information office, 12 soldiers and one civilian were killed while 42 people were wounded in Thursday’s mass shooting. It was unclear how many of those injured suffered bullet wounds.

Col. John Rossi told reporters that 17 people and the suspect, Maj. Nidal Malik Hasan, remained hospitalized by Saturday night. He said that all had suffered gunshot wounds and that Hasan is no longer on a ventilator, but is still in intensive care at Brooke Army Medical Center.

(article and photo source: CNN)