<span style="color: #222222;">Sri Lankan President Maithripala Sirisena has said, the country's intelligence services believe the Easter Sunday suicide bombers had very clear links to the Islamic State terror group. </span><br />'' <br />'' <span style="color: #222222;">In an interview to an international news channel, Mr Sirisena said, the terror group had provided training to the perpetrators of last week's attacks, and that links between ISIS and extremists in Sri Lanka could be traced back to 15 years.</span><br />'' <br />'' <span style="color: #222222;">The President had, earlier, said there could be up to 140 ISIS sympathisers in the country and hunt is on to nab them all.</span>