I think it's magistrate who decided - prisons cannot decide. It's parliament who should make it clear that these little misdemeanors should not be custodial - but strictly community sentencing. The prison should build capacity - so they can supervise the sentencing and correction services - and we also need to devolve part of the judiciary - like we had done to parliament (MCA) and executive (county gov).
These small crimes should be tried by county courts - appointed and supervised by counties. Now we have situation where counties pass by-laws but cannot enforce it. It's ridicolous.
Take alcohol for example - licensing and control is under counties - but the police arrest and take you to judiciary.
It should be county askari takes you to county courts - and you get sentenced strictly for communal services or maybe max of 3 months.
And this is what counties should be asking -NOT money. Ask for functions - and money will follow.
But BBI is not serious.
Yes 000's of petty inmates serving 3 months should show up to clean Nairobi River 2 days a week. Instead of clogging GK prison. But that sounds like prison service stuff not plea bargain. Instead of locking up a drug trafficker for 10 years - prosecutor has leeway to halve the sentence provided they surrender the proceeds, volunteer info on fellow criminals, etc. Big fish are nailed easy as mules turn on them for reduced sentence.