A Congolese member of parliament was killed when a domestic passenger plane crashed in the south-east of the Democratic Republic of Congo (DRC), reports said Friday, according to dpa. Rescue workers at the scene Thursday had managed to pull 13 survivors from the wreckage out of 22 people on board. It was unclear what caused the crash but UN-backed Radio Okapi said the plane was struggling at take-off and was found upside down in a swamp. The Karibu Airways plane was flying from Kamina in the DRC's mining state, Katanga, and heading to the provincial capital Lubumbashi. The member of the country's national assembly was on his was to give a lesson at Lubumbashi University. The vast DRC - the size of Western Europe - has only 500 kilometres of paved road, and travellers often have no other choice but to fly between its provinces. The central African country is notorious for unreliable and often deadly air travel. All but one of the country's 51 airlines are banned from flying in the EU.