He blamed the ruling National Democratic Congress (NDC) for rushing the case to court without adequate preparations.
He said any attempt to conduct fresh investigations into the murder of the King would be hopeless if it failed to fall within the precincts of the facts of the matter.
Flt Lt Rawlings was speaking during a courtesy call on Alhaji Abdulai Ziblim, Regent of Gulpelgu in Tamale on Saturday as part of a fact finding visit to the Metropolis to unveil what led to the destruction of the Northern Regional Secretariat of the NDC by an irate youth on March 29.
He said it was regrettable that President John Evans Atta Mills Administration had failed to fulfil its 2008 campaign promise to the people of Dagbon to find the murderers of the Ya-na because of gross incompetence in handling the case.
The former President however pleaded with both the Andani and Abudu families to reconcile their differences and forge ahead in unity.
He expressed displeasure that the party which he founded based on the principles of probity, accountability and justice was being hijacked by some elements of the government.
Former President Rawlings reminded the government of its responsibility to investigate the cases of alleged financial malfeasance that took place during the eight- year rule of the Kufuor administration.
A representative of the Gulpelgu Regent, Savelugu/Gbanglana Kpema Mohammadu urged the government to review the court ruling on the Ya-na murder trial that led to the acquittal of the suspects.
Former President Rawlings also visited the Tamale Central Mosque, the Ambariya Mosque and the residence of Alhaji Ibrahim Mahama, a nephew of the late Ya-na and a prominent lawyer in Tamale.