A Nigerian court has ordered the British government to pay $27m (£20m) to each of the families of 21 coal miners killed in 1949 by the colonial administration in the south-east of the country.
The colonial police, made up of Nigerians and Europeans, shot dead workers striking for better conditions. Dozens more were injured in what the state-run News Agency of Nigeria described as one of the most notorious acts of repression under British rule in Nigeria.
Historians say the killing helped galvanise support for the burgeoning anti-colonial movement that led to independence 11 years later, in 1960.
The BBC has asked the British Foreign Office for comment.
