[Lysander]

...based on new evidence that prosecutors withheld police reports pointing to another suspect and that the state's key witness had recanted his testimony.

Happens fairly often.

[blackdog]

I've seen a lot of scenario's where the discovery of police reports seems to occur in the same time-frame of retirement of officers who may have had direct knowlege in the case.

Clearing up one's conscious and desk at the same time.

Yes, a lot more info would be helpful here.