LOL.
The prisoners were at risk for contracting COVID-19 and so were let go to take some of the strain off the Gotham prison system. After freeing them, interestingly, there was a rise in crime, a side effect the Gotham P.D. claimed they didn’t see coming.
. . .
Within two days of being let out, they were all caught again by Batman but then broke out again, before being caught again and then breaking out again.