Fighting has erupted in western Ivory Coast, breaching the six-year ceasefire between ex-rebels and government troops, the United Nations says.
A UN spokesman told the BBC there were clashes in the village of Teapleu in the early hours of Thursday morning.
He said given the political stalemate, the reports were very "worrying".
Tensions have been rising since President Laurent Gbagbo's refusal to hand over to Alassane Ouattara, widely seen as the winner of November's poll.
An armed rebellion in 2002 split the world's largest cocoa producer between the north, held by New Forces rebels who are backing Mr Ouattara, and the government-controlled south.
November's presidential vote was supposed to reunify the West African nation. BBC News
