The attack took place in Port Harcourt, ThisDay reported.
More than 20 masked men arrived in boats and shot the officers as they patrolled a wharf.
One policeman jumped into the sea and escaped.
An eyewitness was quoted as saying: “There was serious panic at the Abonema Wharf when the incident happened as people ran helter-skelter when they heard the loud sound of gunshots.
"It
