The robber came guns blazing carted away huge sums of money and left behind about 30 dead bodies.
Three vehicles are said to have been abandoned by the gang after the conducted the high speed heist unchecked.
Residents of the state are angry at the failure of security apparatus in the wake of the robbery.
Mr.Ajayi Okansanmi, spokesperson of the police in the state confirmed the incidence and the death of 9 police men. He however said 7 other people were killed in the incident.