Catastrophic like number 2 or 3 definition, or in the sense of "catastrophic engine failure"--
catastrophic - Definitions from Dictionary.com
And any traffic death is a catastophe. 3 or 300. Although I could carve out a "stupidity" exception to that. Driving drunk and/or recklessly is not quite as catastrophic, unless you manage kill others.
SCMP had it as someone carrying combustibles and then somehow igniting them. Wonder what the truth is? Time to start an "X-Files: China".
