The governor promised to provide beddings for the inmates who had been forced to live in sub-human conditions.
The police and the Army have launched a manhunt for inmates of the Koton-Karfi Prison in Kogi State, who were set free by gunmen suspected to be Boko Haram insurgents.
There were about 145 inmates in the 80-year-old prison as of 10pm on Sunday when the gunmen gained entry into the prison by blowing up its iron bars with an improvised explosive device.
A male prison officer and an inmate were injured while another inmate was found dead after the attackers left.
Twelve of those who fled were said to have returned to the prison under controversial circumstances.
But Lawan told journalists on the telephone that apart from the 13 persons who died on the spot, 13 others who were among the injured later passed on where they were being treated.