The European Union has said that although voting in Guinea was calm, "questions remain as to the credibility of the result".

It said it had taken note of the provisional results that announced President Alpha Conde's win.

The EU said it supported the diplomacy efforts by West Africa's regional bloc, Ecowas, the African Union and the UN to restore confidence.

A delegation of mediators is in the country and has met various political actors, including opposition leader Cellou Dalein Diallo who has been prevented from leaving his house.

"To this end, all actors involved in this process must be able to fully enjoy their freedom of movement and expression.It is also important that the means of communication, in particular access to the internet, are guaranteed in all circumstances," the statement added.

There have been clashes between opposition supporters and security forces across the nation since the opposition leader declared himself winner.