Residents of the provincial city of Kankan say that the offices of an opposition leader were wrecked by government supporters.
Kankan inhabitant Boubacar Kourouma said that supporters of President Alpha Conde looted and burned the offices of opposition politician Lansana Kouyate Monday. Kankan is 700 kilometers (435 miles) north of the capital Conakry.
Another resident, Alpha Oumar, said the police watched the destruction of the offices.
The residents say that the supporters of the ruling party took the action against Kouyate. They accuse him of leaving Conde's party to challenge the president. Guinea is set to hold a national election on May 12.