The United Nations says that two of its local Sri Lankan staffers are in government custody after they had been missing for over a week.
A UN statement Saturday said the accusations against the two staffers from the UN's refugee agency and the office for project services are not known. It says they had been missing for eight days.
Police could not immediately be contacted for comment. Authorities have previously arrested local UN workers they suspected of having links to the rebels. It was unknown what the two staffers were doing, but UN agencies are helping those caught in the 25-year civil war against the Tamil Tiger rebels that ended last month.
Some 300,000 people have been displaced and are housed in camps.