Votes are being counted after Saturday's general election in Ghana, following a voting process that was largely peaceful except for a fatal shooting in the north of the country.
Police said four men were arrested at a polling station in the town of Nyankpala, where an opposition MP candidate had attempted to file a complaint but was stopped by ruling party supporters.
Soldiers have since been sent to Nyankpala in armoured vehicles to restore calm.
Elsewhere election day has been peacefully conducted, with some Ghanaians queuing before dawn to make sure they cast their ballots.