Agency chairman Ahmadu Giade says the drugs were worth $9.9 million. He says the US helped Nigerian officials find the illegal shipment but did not give details on the collaboration. He also says arrests have been made but did not elaborate in his statement on Saturday.

The catch comes after Nigerian officials seized a shipment of military-grade weapons, allegedly from Iran, in Lagos’ busiest port last month.

Nigeria this week reported Iran to the United Nations over the weapons shipment, which contained artillery rockets, mortars and ammunition.