Police in Nigeria say gunmen in speedboats blew up a police post on Bonny Island - an oil and gas export hub.
Police say one person was injured in the attack, but no oil infrastructure was damaged.
Police say the gunmen used dynamite in their early Saturday morning attack, and fired on a local leader's home.
Attacks have become frequent in the oil-rich Niger Delta region, where poverty is rampant.
Some information for this report was provided by AFP, AP and Reuters.