Oil giant Shell is being sued in London for the second time in five years over spills in the Niger Delta.
Two communities are claiming compensation and want Shell to clean up their land.
Shell said it is at an "early stage" in reviewing the claims and that the case should be heard in Nigeria.
The
Ogale community of about 40,000 people in Rivers State, on the coast of
Nigeria, who are mainly farmers or fishermen, are some of the
claimants.
Their case is being handled by law firm Leigh Day.
Spills since 1989 have meant they don't have clean drinking water, farmland or rivers, their claim says.
It points to a November 2015 report by Amnesty International which says four spill sites Shell says it planned to clean up are still contaminated.
