article_snippet.sent: Fire investigators have confirmed the fire was started deliberately and three separate areas of heath - measuring half a hectare, one hectare and 70 hectares - were destroyed .
article_snippet.sent: the fire was sparked by suspected arsonists in three locations.
article_snippet.sent: Police are treating the fire as suspicious and have appealed for witnesses as Police investigate what was used to start it.
article_snippet.sent: Two schoolboys have today been arrested for the arson attack that devastated the sensitive heathland.
article_snippet.sent: The youths, aged 14 and 15, are being held by police on suspicion of deliberately starting three fires.
article_snippet.sent: Dorset Police have confirmed Dorset Police are treating the fire as suspicious and investigations are ongoing but no arrests have been made yet .
highlights_snippet.sent: Dorset Police confirmed Dorset Police are treating Dorset Police as suspicious after evidence of three deliberate fires was discovered .