<span style="color: #222222;">In Congo, at least 50 people were killed and more than 100 were badly burned when a tanker truck collided with another vehicle and, as villagers rushed to collect the leaking fuel, burst into flames, witnesses and officials said. </span><br />'' <br />'' <span style="color: #222222;">The accident occurred last night in the village of Mbuba, about 200 kilometres southwest of the capital, Kinshasa. Health Ministry said in a statement that the fire quickly spread to nearby homes. </span><br />'' <br />'' <span style="color: #222222;">President Joseph Kabila has ordered three days of national mourning.</span><br />'' <span style="color: #222222;">The U.N. peacekeeping mission in Congo said it had offered assistance for the injured, with nine ambulances en route to help with medical evacuations.</span><br />'' <br />'' <span style="color: #222222;">In 2010, more than 200 people were killed when a tanker truck overturned and burned in South Kivu province.</span><br />