Reckless youths have destroyed a 100,000 piece Lego helicopter worth $23,000 on display in an Australian mall.

The Lego chopper, believed to be the biggest ever made, took Melbourne-based Lego “certified professional” Ryan “The Brickman” McNaught six weeks to build but was smashed to pieces by vandals in a mall in Cairns, in north Queensland.

Police are scouring surveillance footage after a tourist said he witnessed a group of youths push the model over before they fled the scene.

Local parents who were hoping to take their kids to see “Elvis the Helicopter” said they were devastated over the incident.

“I know the feeling of having one of the small sets broken ‘accidently’, I couldn’t imagine finding out that someone has deliberately pushed over a (100,000) piece creation,” said Cairns father Mark Jordan.

READ MORE AT CAIRNS.COM.AU