The spill was reportedly caused by activities of oil thieves who left a hacksaw cut on the pipeline.
The Public Relations Officer of Ikarama Community Development Committee, Washington Odoyibo, said on Thursday that the leak had been clamped.
He said that the spill had taken a negative toll on the farming and fishing vocations of Ikarama community.
According to a Joint Investigation Visit Report, the cause of the spill was traced to sabotage by yet-to-be identified persons.
The report stated that the spill impacted an area of 6400 square meters which stretched beyond the oil firm’s right of way into the adjoining land near the spill site.
It said that some 482 barrels of Shell’s Bonny Medium crude stream was discharged into the environment while 15 per cent of the volume may have evaporated.
Representatives of National Oil Spills Detection and Response Agency, host communities, Bayelsa Ministry of Environment, Department of Petroleum Resources and Police signed the report.
The report further stated that Shell commenced the recovery of spilled oil on November 12 while clean up of the spill site would be completed in April 2014.