11.   An electric spark was believed to have ignited gas that had built up in the basement of the building, the ministry said.

12.   He said the gasoline evaporated in the afternoon heat and an electric spark from a socket may have caused the explosion.

13.   In a second re-enactment, they spilled gasoline in a Saab, tipped it into the ditch and created electric sparks.

14.   It can explode there, or a carelessly lit match or electric spark can ignite the gas on the way into the stove.

15.   It can explode there, or a carelessly lighted match or electric spark can ignite the gas on the way into the stove.

16.   Officials suspected the blast to be caused by an electric spark or a short circuit which ignited fumes produced by the paint, it said.

17.   Revelers in the packed Ozone Disco Pub saw electric sparks and smoke moments before the disco went pitch black.

18.   Revelers in the Ozone Disco Pub saw electric sparks and smoke moments before the disco went pitch black.