Negombo, April 23 -- : The Islamic State (ISIS) has claimed responsibility for the coordinated bombings that claimed the lives of over 300 people in Sri Lanka on Easter Sunday.

The terror outfit made the claim using its Amaq news agency, according to The New York Times.

Earlier today, Sri Lanka's Deputy Defence Minister Ruwan Wijewardene said the attacks were in retaliation to the Christchurch terror attacks that took place in New Zealand on March 15.

"The preliminary investigations have revealed that what happened in Sri Lanka was in retaliation for the attack against Muslims in Christchurch," Al Jazeera quoted Wijewardene, as saying.

Wijewardene also told the Sri Lankan Parliament that the death toll has mounted to 321, including 38 f...