Re confession
The confession was extremely problematic. They didn't just 'suppress' it. They led the public, including the jury pool, to believe it was a genuine confession that could not be used for legalistic reasons. Then they tried to prevent anybody from examining it by 'suppressing it, except for impeachment should he testify'. Incredibly, the prosecutor got the defense lawyer to do that for him. Then the defense lawyer tried to get him to plead guilty. After a few years in jail he agreed to plead guilty, but when they brought him to court he started yelling that he wasn't guilty. They restrained him and told the media he had 'an outburst'.

re DNA
The DNA results, even if they were as the prosecutor portrayed them, are not meaningful evidence. It is a red herring. Basically the prosecutor wanted to blind the jury by saying 'we have DNA evidence, therefore he is guilty'. The actual DNA test, even as portrayed by the prosecutor, do not indicate guilt.


re rigor

A good point you make, but here are some details. 1) The body was in full rigor 30 hours after the latest the accused could have been there 2) The victim was a small child, roughly 50 pounds with little muscle or fat, so rigor would have come and passed faster than with an adult 3) The bathroom where the body was found was next to the boiler room so temperature was not too cold. Also, all inhabitants of the apartment were from the tropics and the accused owned only one jacket so temp would not have been too low. Agreed that rigor is extremely variable, but even by the medical examiner's math the accused was a tough fit for the timeline. Other things that indicate later time of death include that the skin of the body was wet, somebody tried to wash it shortly before it was found.

I am not an expert in anything, but there are soo many red flags in this case, even aside from the obvious indications he is not guilty, that it does need to be re examined. The original trial, and the appeal, were entirely run by and for the prosecution. The most basic ethics were completely ignored. The question now is what options does that guy have?