21.   Overnight, a small explosive charge next to three gas bottles in the stolen car went off outside the main police station in Lille.

22.   Police initially thought the blast was caused by a gas bottle in the restaurant kitchen but witnesses spoke of a gas leak.

23.   Some use gas bottles to cook on while others make campfires, creating a constant danger of explosions and fire.

24.   The bomb that killed seven people in the Paris subway this week included a standard camping gas bottle, police said Thursday.

25.   The bomb, made from a camping gas bottle and toilet paper soaked with an inflammable liquid, went off mid-morning at the school in Peronne.

26.   The casualties were injured by screws packed in the gas bottle, police said.

27.   The FARC is the only group using the mortars fashioned from commercial gas bottles.

28.   The fire, fanned by strong winds, was sparked by a gas cooking bottle.

29.   The inferno was sparked by a gas cooking bottle.