FORT HOOD, Texas – Soldiers who witnessed the shooting rampage at Fort Hood that left 13 people dead reported that the gunman shouted "Allahu Akbar!" before opening fire, the base commander said Friday.

Lt. Gen. Robert Cone said officials had not yet confirmed that the suspected shooter, Maj. Nidal Malik Hasan, made the comment, which is Arabic for "God is great!" before the rampage Thursday, which left 30 people wounded, including the gunman.

An imam from a mosque Hasan regularly attended said Hasan, a lifelong Muslim, was a committed soldier, gave no sign of extremist beliefs and regularly wore his uniform at prayers.

Cone said Hasan was hospitalized in stable condition and that investigators hope to interrogate him as soon as possible. In the early chaos after the shootings, authorities believed they had killed him, only to discover later that he had survived.