There are concerns in the Cook Islands that a spate of recent fires may be arson.
This is the view of retired Australia police detective, Rod Henderson, who now lives on Rarotonga.
Mr Henderson has been studying a series of fires over the past fortnight and he believes there are similarities to fires around the island in 2012/2013 when multiple businesses, schools and homes went up in flames, leading to speculation the fires were deliberately lit.
The government offered a reward for information that would solve the mystery but there were no takers.
Don Wiseman asked Mr Henderson what convinces him these latest fires are arson.