Need urgent help with an autist drawn to starting fires

Please can anyone help?

Has anyone encountered an autist, ADHDer, or someone with Tourette’s, drawn to starting fires?

What helped?
Were there any reasons or explanations for the draw, which is irresistible, and currently impossible to overcome?

Desperate for:

Explanations
Thought processes potentially involved
Tools
Solutions
Advice

Thank you very much.