Article run by Sun about crime (5)
I believe the answer is:
Here is my best explanation:
'crime' is the definition.
(I've seen this before)
'article run by sun about' is the subsidiary indication.
'article' becomes 'a' (example of the part-of-speech).
'run' becomes 'r' (cricket abbreviation).
'by' is a charade indicator (letters next to each other).
'sun' becomes 's'.
'about' becomes 'on' (**).
(Other definitions for arson that I've seen before include "Incendiarism", "Be pettish", "Torching", "Act of a pyromaniac", "Sonar (anag.)", "matchplay, say?", "Crime of fire-raising", "Fire-lighting crime", "Crime of fire setting" and "Roans (anag)".)