Search for boy missing north of Perth EMERGENCY services are searching for a 14-year-old boy who has gone missing in waters off the coast of Mindarie, north of Perth. The boy's family raised the alarm at Quinn's Beach at around 4.30pm WST, and since then three helicopters have been in the air searching for the missing teenager. The WA police helicopter, the Surf Life Saving aircraft and the shark spotting chopper are all in the air. The boy's family is understood to be on the beach awaiting any news.