A small aircraft carrying oil workers in South Sudan's Unity State crashed on Wednesday, killing 20 people, an official said. The plane crashed at the Unity oilfield airport on Wednesday morning as it was heading to the capital Juba,

Small plane crash in South Sudan kills 18, including oil workers, as authorities investigate cause of tragedy.

All 21 people on board, including a single survivor, were employees of an oil consortium that includes China National Petroleum Corporation.