conduct themselves in a manner that will ensure public order without resorting to force,” he added.
Amnesty said the security forces had arrested more than 100 members of pro-Biafran separatist groups in the run-up to Tuesday’s anniversary.
Calls for independence never disappeared even after the 30-month civil war, which left more than one million dead, most of them Igbos, mainly from starvation and disease.
Many people accuse the government of failing to invest in the south-east since the end of the war in 1970, blighting development. Some see it as a punishment for the conflict.
Support for secession has increased since the arrest in late 2015 of Nnamdi Kanu, the leader of the pro-independence Indigenous People of Biafra (IPOB) movement.
