The probe has found that the route-deviation of the motorcade was due to a slip-up in communication between the pilot officer and the driver.
Investigations are on to find out how a person who is not a regular police employee was entrusted with driving the pilot car in the motorcade.
'It is our constant effort to keep issues, which might snowball into law and order problems, under check,' says Director General of Kerala Police Jacob Punnoose.
The joint statement was issued by retired DGPs Julio Ribeiro, Prakash Singh, P K Hormis Tharakan, Kamal Kumar, Jacob Punnoose, Sanjeev Dayal, Jayanto Choudhury and N Ramachandran.