According to him, the conditions of the courts outside Ibadan were even worse.
Among those released were inmates with health challenges, those awaiting trial for bailable offences and others who have been in custody for over four years.
The suspects allegedly attacked the bus at Alaba Suru and robbed the passengers of their belongings.
The market was said to have been illegally constructed on a plot of land owned by the National Council of Women Societies.
The group said attacks by bandits are part of a conspiracy to destabilise the northern economy.
