Fox News contributor and former CIA station chief Daniel Hoffman said the Sri Lankan terror attacks on Easter Sunday represent an "intelligence failure." 

Sunday’s coordinated suicide bombings, which ripped through churches and luxury hotels, were carried out by seven bombers from a militant group believed to be National Thowfeek Jamaath.

Authorities said the international intelligence agencies warned of attacks several times since the start of April, but Sri Lankan officials still failed to stop the deadly bombings, which killed nearly 300 people.

Hoffman said on "America's Newsroom" that the attacks bore all the hallmarks of al Qaeda, but it's "surprising" for no group to have claimed responsibility at this point. 

Sandra Smith asked about reports of missed warning signs by Sri Lankan officials. 

"This is, by all accounts, an intelligence failure," said Hoffman, explaining that security services are supposed to penetrate extremist networks and preempt attacks. 

He said he doesn't believe it was a "locally conducted attack," questioning whether the bombers were in contact with al Qaeda or ISIS networks overseas. 

Watch the full discussion above. 

Sri Lanka bombings on Easter Sunday claim lives of 3 of Danish billionaire's children