The Swiss authorities have filed a suit against Nigeria at the international court over the detention of San Padre Pio, its vessel.
Operation forward base of the Nigerian navy in Bonny, Rivers state, had arrested the ship on January 23, 2018.
The oil tanker, registered with canton Vaud shipping company ABC Maritime, and its crew members were detained for alleged diesel smuggling, and violation of Nigeria’s territorial waters.
The captain of the ship had denied the allegations, saying he had all papers covering him and the transactions.
Some crew members, except four Ukrainians, had already been allowed to leave the ship which has the capacity for 5,500 tonnes of cargo.