Fighting as voters go to polls in Central African Republic

Witness have said that heavy fighting broke out in a Muslim enclave of Central African Republic's capital Bangui as voters went to the polls.

The ballot is a constitutional referendum seen as crucial to restoring stability.

Explosions of rocket propelled grenades and gunfire were heard in the PK5 neighbourhood soon after UN peace keepers moved in to protect poll workers and residents who had been prevented from voting.