The government on Monday blamed a Sri Lankan Muslim outfit for the horrific serial bombings which killed 290 people in the country on Easter Sunday and said the attacks were "a colossal intelligence failure".
The National Thowheed Jamath (NTJ) carried out the eight explosions across three cities in Sri Lanka, also injuring over 500 people, the government told the media.
Senaratne, who was addressing the media along with other Ministers, called the well-planned attacks a "colossal intelligence failure" and stated that despite receiving prior information, the attacks could not be prevented, media reports said.
The Minister said that on April 4, international intelligence agencies -- which he did not identify -- had warned of these attacks and even mentioned that the targets would be churches and tourist destinations.
"He had seen this circular only when we did. He was left out of Security Council meetings."
Two Sri Lankan Ministers, Mano Ganesan and Harin Fernando, also stated on Twitter that the government had prior information about an impending attack.
Calling for the resignation of the Inspector General of Police, Senaratne said: "This morning (Monday) the President, the Prime Minister and State Defence Minister met for the first time. We need a unified political leadership today to overcome this situation and we will take every action to eradicate terrorism from our country."