David Cameron gave the Sri Lankan President an ultimatum today - launch an independent inquiry into the country's alleged human rights abuses or he would take it to the United Nations.
However, the Prime Minister's comments were dismissed by Mahinda Rajapaksa who said Sri Lanka had "nothing to hide".
This week ITV News has been in Sri Lanka for the Summit of Commonwealth nations but today our team were denied direct access to question the president of the country.
From Colombo, ITV News International Editor Bill Neely reports:
The Prime Minister's historic visit to northern Sri Lanka highlighted human rights issues at the start of the Commonwealth summit.
A press conference due to be held today with Sri Lankan President Mahina Rajapaksa was cancelled at the last minute.
Democratic freedoms are being clipped and police vans are waiting for those who might disagree what the Sri Lankan government is doing.