Four men have been charged in Australia over the importation of 400kg of crystal methamphetamine hidden inside hot sauce bottles.

The drugs, worth an estimated A$300 million (€185m), were seized earlier this week when authorities searched an air cargo consignment at a Sydney freight depot.

The delivery, declared to contain Sriracha hot chilli sauce, had arrived from the United States.

Four men aged 30, 34, 36 and 45 were arrested in the Sydney area.

Police also searched a vehicle and seized eight boxes containing bottles of Sriracha, box cutters, moving bags and gardening gloves.