Sri Lanka did not arrest citizens who joined IS because it is ?not an offence?

Sri Lankan Prime Minister Ranil Wickremesinghe told Sky News on Thursday that the Sri Lankan government had known Sri Lankan nationals who had joined Islamic State (IS) had returned to the country ? but that they could not be arrested, since joining a foreign terrorist organisation is not against the law. His comments came days after attacks on Easter Sunday that killed 253 people ? revised down from more than 350. IS claimed responsibility on Tuesday, although the degree of their involvement i