National Party leader Simon Bridges says we need to exercise 'real caution' over the claims that the Easter Sunday bombings, which killed more than 300 people, were retaliation for the Christchurch mosque attacks.
A series of coordinated blasts in churches and hotels hit Sri Lanka on Sunday leaving 321 people dead and 500 injured.
"The initial investigation has revealed that this was in retaliation for the New Zealand mosque attack," junior minister for defence Ruwan Wijewardene told parliament.
However, the Associated Press said Mr Wijewardene made the statement about retaliation "without providing evidence or explaining where the information came from".
Mr Bridges joins Guyon Espiner in the Auckland studio.