Poland's highest court has ordered a man released from prison after he served more than 19 years for double murder.

Arkadiusz Kraska was freed Monday after the Supreme Court concluded his conviction and sentence are likely to be overturned.

Prosecutors who revisited the case found evidence and witness testimony that didn't support Kraska's guilt. A court is supposed to review the case in coming months. The Supreme Court said there is "high probability" the verdict will be thrown out.

Kraska had small crimes on his record before his murder conviction. He has insisted he is innocent.

The Supreme Court ruled last year that a man who had served 18 years of a 25-year sentence did not rape and murder a teenager, the crimes that sent him to prison.