Authorities in Guinea-Bissau have seized a consignment of nearly 800kg (1 700 pounds) of cocaine, police sources said on Sunday.

It is the biggest drugs haul in the country in over a decade.

Four suspects – two Nigerians, one Senegalese and one Bissau-Guinean – were arrested following the seizure overnight on Saturday to Sunday at the capital Bissau’s northern exit.

The drugs were found in a refrigerated truck registered in Senegal.

Police are probing whether army officers and high-ranking officials were involved, a source said.

Get more stories like this on Twitter & Facebook

AD: To get thousands of free final year project topics and other project materials sorted by subject to help with your research [click here]