1.   The risk of a stray spark igniting another fire grew too high.

2.   A stray spark apparently ignited cooking gas that had leaked from tanks and collected in a basement restaurant, they said.

3.   A Taiwanese Web site reported that a stray spark from construction workers welding in a sub-basement may have started the fire.

4.   Families of the victims say the fire on a hill used as a U.S. military training area was caused by a stray spark from soldiers at target practice nearby.

5.   Protesters claimed the fire was caused by a stray spark from soldiers at target practice nearby and accuse the soldiers of negligence.

6.   Stray sparks fell and ignited piles of rags and furniture.

7.   The fire may have been started by a stray spark from soldiers at target practice, the Yonhap news agency reported.

8.   Yonhap news agency reported that the fire may have been caused by a stray welding spark from a renovation worker.