Security agents on Tuesday found 11 bodies of policemen declared missing at the weekend in Nigeria's southern Bayelsa state, police and army spokespersons said.
One officer remains unaccounted for.
State police spokesperson Alex Akhigbe told reporters that the bodies were taken to a morgue in the state capital Yenagoa.
Witnesses said some of the bodies
recovered along the creeks and waterways of the oil-rich state were
burnt beyond recognition, mutilated and stripped of their uniforms and
rifles.
The Friday attack by speedboat
came two days after the main militant group in the Niger Delta region,
MEND, allegedly threatened to resume attacks over the conviction of
presumed leader Henry Okah in South Africa.