"Under secretary for Political Affairs, William J. Burns will travel to Doha, Qatar, for the meeting of the Contact Group on Libya April 12-13," the State Department said in statement.

"He will be accompanied by Assistant Secretary for European and Eurasian Affairs Philip H. Gordon and Assistant Secretary for Near Eastern Affairs Jeffrey Feltman," it added.

The group, set up in late March at a London international conference held to give political leadership to UN-mandated air strikes against Qadhafi's Libya, is to review the state of play four weeks into the military campaign.