The group said it would launch reprisal attacks in the event of another military raid on one of its base camps.
"Effective 0100 hours (0000GMT) 21 September, exactly one week after we launched our reprisal, mend will begin a unilateral ceasefire till further notice," the group said in a statement.
"We hope that the military has learnt a bitter lesson. The next unprovoked attack will start another oil war," it said.
The group, which is a loose alliance of various armed gangs operating in the southern Niger Delta, had attacked military positions, destroyed pipeline switching stations and blew up pipelines that carry crude oil from wells to export terminals in southern Nigeria.
In the past week, militants have attacked gas plants, oil installations and pipelines in some of the worst violence for two years.
Nigeria's oil production has been cut by 20% because of unrest in the region over the past few years.
Author: Jo Amey




