Hawke's Bay Police have made several arrests in relation to the recent arsons in the Hastings area earlier this month.
Three males aged 18, 16 and 15 have together been charged with the arson of the pirate ship at Splash Planet on April 5.
Two of the youths have also been charged with arson in connection with the fire at St John's College on April1.
All three will be appearing in the Hastings Youth Court today.
Detective Senior Sergeant Marty James said the arrests were due to an excellent response from members of the public who provided valuable information.