1.   He said if unburned gas had spread, the slightest spark could have caused a huge explosion.

2.   He said the explosion could have been caused by sparks resulting from an electrical short circuit or a chemical reaction in the fuel tank.

3.   Stage six was suspended for the second seeds because of a bush fire caused by sparks from one of the cars from group one.

4.   The sparks caused several fires that combined.

5.   Initial investigations show that the fire may have been caused by sparks from welding being carried out by maintenance workers in the lift shaft, police said.

6.   Initial investigations showed that the fire might have been caused by sparks from welding being carried out by maintenance workers in the lift shaft.

7.   The report said a static spark caused the explosion of a fuel tank when it came into contact with an air-fuel mixture.

8.   It was caused by sparks from old electrical wiring in the mine, a township government official told AFP Tuesday.

9.   Some of those who managed to escape said the fire was caused by sparks in electricity wires.

10.   The fire was caused by sparks from old electrical wiring in the mine, a township government official told AFP Tuesday.