21.   It quoted defence ministry sources as saying the crash was due to a mechanical fault.

22.   Local authorities had claimed that the area was clear of land mines and the accident was caused by a mechanical fault.

23.   The blaze was believed to have been sparked by a mechanical fault in the lift system or a short circuit.

24.   The blaze was believed to have been sparked by a mechanical fault in the lift system or a short circuit, Interfax news agency reported earlier.