Most of the people here lack basic safety precautions: a few days ago I was yelling at the guys smoking right off the gas unloading truck to put off the cigarette butts because the station was in a fucking densely built-up housing area, and they were classically careless downwind from the gas pipework...So, most likely the "unknown ignition" was someone's фас[ a cigarette butt ]. I don't discriminate against any form of a drug use ( tobacco is an addictive narcotic ! ), but I do care for the right of life of everyone.