The drugs – totalling around 998 kilograms, worth nearly £70 million – were mistakenly delivered to a number of Czech supermarkets, The Independent reports.

Workers in the stores in Prague, Jicin and Rychnov nad Kneznou called police after finding the suspicious powder-filled packages in banana crates.

International police are now investigating how the drugs made their way into Czechia and where they were intended to go.