The Nigerian Army has started gradual withdrawal of troops from checkpoints in Aba, Abia State.
The News Agency of Nigeria has said some of the checkpoints have been dismantled on Monday.
There have been calls that President Muhammadu Buhari should withdraw troops from the South-East.
The ongoing Operation Python Dance in the region had been declared as inappropriate and unsconstitutional by Senate President, Bukola Saraki and human rights lawyer, Femi Falana.
The governor of Abia State, Okezie Ikpeazu had declared curfew after a clash between soldiers and members of IPOB.
The five military checkpoints mounted on the busy Enugu-Port Harcourt Expressway had been reduced to three.