Who re-organised the Nigeria’s four regions into twelve states in May 1967?

Explanation

General Yakubu Gowon created twelve states out of the four regions that existed at that time appointing a governor to head them. 

The following were the governors

1. Colonel Udoakaha Jacob Esuene South Eastern State
2. Lieutenant Commander Papayere Diette-Spiff Rivers State
3. Police Commissioner Usman Faruk North western State
4. Colonel Mobolaji Olufunso Johnson Lagos State
5. Colonel Hassan Usman Katsina Kaduna State
6. Colonel Samuel Ogbemudia Bendel State
7. Colonel Robert Adeyinka Adebayo Western State
8. Colonel Sanni Bello Kano State
9. Colonel Chukwuemeka Ojukwu East Central State
10. Colonel Ibrahim Taiwo Kwara State
11. Colonel Musa Usman North eastern State
12. Police Commissoner Joseph Gomwalk Benue/Plateau State

There is an explanation video available .