One of the main ethnic rebel groups in Burma has reportedly agreed to a preliminary ceasefire with the government.

Burmese exile websites said Friday that the Shan State Army is negotiating with the government on an agreement to stop the violence, begin political negotiations, and cooperate on fighting illegal drugs.

The United States and other Western nations have demanded Burma arrive at peace agreements with its ethnic rebel groups in exchange for better relations with the West.

Burma's government last month revealed a new peace offer to rebel groups that calls for ceasefire followed by development assistance and then a national conference to discuss political grievances. It was the first time the government had offered to hold political discussions with the rebels.