The seizure was made on Saturday in Topoe village with help from the US international narcotics agency.

Liberian Justice Minister Musa Dean is quoted as saying that a Guinea-Bissau national and a Lebanese suspect were arrested.

He described the haul as pure cocaine.

West Africa is favoured by drug cartels because of weak local law enforcement and a largely unsupervised coastline.

The drugs are flown or shipped across the Atlantic and then onto markets in Europe and the US.