National Express said: "An empty National Express vehicle caught fire at Gatwick Airport earlier this afternoon. We are working closely with the emergency services and will continue to assist them.
"We will also carry out our own thorough investigation to establish the cause of this highly unusual incident."
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Essex Police say that they can't comment on Martin Goldberg's death, but there were indications of an attempt to destroy evidence.
Police say indecent images of children have been found at the home of a deputy head teacher, who was recently found dead.
Essex Police say pictures of boys undressing have been discovered in the home of a teacher who's been found dead.