21.   Fire officials on Wednesday were trying to determine what caused a blaze that gutted the top floor of the headquarters of Nestle Purina PetCare.

22.   Firefighters believed the blaze was caused by an electrical short circuit in a house belonging to a man called Agustinus.

23.   French officials said there was no immediate indication that the blaze was caused by arson or an attack.

24.   He would not comment on whether careless smoking may have caused the blaze.

25.   Hot fragments landed in an uninhabited mountain forest near the range and caused a blaze, being fought by local fire fighting teams.

26.   Improper wiring at the hall may have caused the blaze, an initial police investigation concluded.

27.   Improper wiring may have caused the blaze, an initial police investigation concluded.

28.   In most cases, the blazes were caused by arson, burning incense or short-circuited electrical lines, it said.

29.   Investigators did not immediately know what caused the blaze.

30.   It was not clear what caused the blaze.