WASHINGTON (Reuters) - Federal authorities had information indicating that a US Army psychiatrist was a threat before the mass killings at the Fort Hood Army base in Texas but did not heed clear warning signs, according to a report by two senators released on Thursday. Major Nidal Malik Hasan is charged in a shooting rampage that killed 13 people and wounded 32 others on November 5, 2009, at the large Army base outside Killeen, Texas. Although neither DoD (the US Department of Defence) nor the FBI had specific information concerning the time, place or nature of the attack, they collectively had sufficient information to have detected Hasans radicalisation to violent extremism but failed both to understand and to act on it, the report stated. The document was issued by Senate Homeland Security Committee Chairman Joe Lieberman, an independent, and the panels senior Republican Senator Susan Collins. The investigation found specific and systemic failures in the governments handling of the case that prevented authorities from intervening against Hasan. The Fort Hood massacre should have been prevented, Lieberman said in a statement. People in the Department of Defence and the FBI had ample evidence of alleged killer Nidal Hasans growing sympathies toward violent extremism in the years before the attack. The report said evidence of Hasans radicalization to violent extremism was on display to his superiors and colleagues during his military medical training and he was referred to as a ticking time bomb by two of them. Not only was no action taken to discharge him, but also his Officer Evaluation Reports sanitized his obsession with violent extremism into praiseworthy research on counterterrorism, the report said.