The Nigeria Customs Service (NSC) Tin Can Island Port Command said it generated a sum total of N493.7 billion in 2021.
The area controller, Mba Musa, said the command also contraband items worth N607.35 billion during the year.
Musa said 20 suspects and a vessel were detained in connection with the seized items.
The seized items include two automatic rifles with 164 rounds of live ammunition which were intercepted in a 40ft container.