Fire destroyed 14 buses of the Compañía de Inversiones La Tapachula early Thursday in Brasil de Santa Ana.
The wind whipped the blaze, and some diesel tanks were ruptured by exploding tires. Fire officials were seeking possible contamination of an adjacent stream that feeds the Río Virilla, said the Cuerpo de Bomberos.
The fire department said that the blaze seemed to result from a short in a wire between the starter and the alternator in one of the buses. The company had 75 buses parked in the lot.