A JETSTAR crew member told a plane load of passengers there were sniffer dogs waiting at the airport and suggested they flush their drugs away ­before landing.

“We have been told there are sniffer dogs and quarantine officers waiting in the domestic terminal,” he told passengers on a late Gold Coast to Sydney flight on Sunday night.

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“If you need to dispose of anything you shouldn’t have we suggest you flush it now.”

The plane was full of weary festivalgoers returning from the Splendour in the Grass music festival — and there was allegedly a rush for the toilets.

But not everyone on board appreciated the message.

“I was shocked,” a passenger told The Daily Telegraph.

“Why would you tip people off about this? If they have got something illegal, let them get caught. I obviously couldn’t tell if people were flushing things but several of the people who suddenly got up to queue for the toilet had things clenched in their hand.’’

media_camera Fans cheer band "The 1975" at Splendour. Picture: Jono Searle.

Jetstar confirmed the ­announcement had been made, attributing it to an overzealous, casually employed crew member who chose to ­deliver his own quarantine ­announcement rather than the pre-recorded one.

“We’re required to play a pre-recorded quarantine announcement for customers on all flights across interstate and territory borders within Australia,” a Jetstar spokesman said.

“Our procedures also allow cabin crew to deliver the quarantine message through a public announcement and on this occasion the crew member elected to do so.

“The crew member’s words were poorly chosen and are plainly at odds with the professional standards we’d ­expect from our team. We’re addressing the matter with the cabin crew member involved.”

The incident followed an earlier prank by singer Lily Allen, who persuaded Australian Federal Police to put her in handcuffs when she arrived at the Gold Coast airport on Sunday afternoon.

Allen, who was on her way to the music festival in Byron Bay, posted the picture of her cuffed and on her knees on Instagram and shared it with her 4.7 million Twitter followers.

An AFP spokeswoman said the officer involved had breached protocol: “At her ­request, the members involved placed open handcuffs on Ms Allen for a photo opportunity.

“It appears the members ­involved were caught up in the moment and standard protocols were breached.”

The AFP and quarantine authorities had no comment on the announcement on the Jetstar flight from the Gold Coast