Freedom fighters and locals formed a human chain on Sonaimuri-Dhaka highway in Sonaimuri upazila yesterday, demanding shifting of the graveyard of Bir Sreshtha Ruhul Amin from Khulna to his Bagpachra village in the upazila. People from all walks of life participated in the human chain which continued for about an hour. Bir Sreshtha Ruhul Amin was buried on the bank of river Rupsha in Khulna in 1971. Now the graveyard is threatened by river erosion, sources said.