Worldwide pirate attacks at lowest level since the corresponding period last year . Decline due to a steep drop in piracy off coast of Indonesia . Pottengal Mukundan warns now is not time to be complacent . Attacks increase in Indonesia and West Africa .
Worldwide pirate attacks at lowest level since 2008 . Decline due to a steep drop in piracy off coast of Somalia . Watchdog warns now is not time to be complacent . Attacks increase in West Africa and Indonesia .