In Ivory coast, at least six people were killed on Wednesday as police were attacked with rocket-propelled grenades in an Abidjan district. Police source said five of the dead were policemen.The violence came the day after two civilians and two police were shot dead in the bastion of Alassane Ouattara, the man the world says beat strongman Gbagbo in a presidential election.Sporadic gunfire could be heard around midday today as Defence and Security Forces fired in the air to clear streets littered with burnt-out vehicles and unmanned roadblocks preventing civilian traffic circulating.The United Nations says that over 200 people have died in the crisis so far, with African-led efforts to mediate the stand-off failing to make any visible progress as the army loyal to Gbagbo besieges Ouattara's headquarters.AU envoy and Kenyan Prime Minister Raila Odinga, the latest in a cascade of African leaders seeking an end to the deadly stand-off, is to return to Abidjan after briefing AU Commission chief Jean Ping in Nairobi.The Economic Community of West African States (ECOWAS) bloc has said it could, as a last-resort, send in troops if talks fail.