RICHMOND, Va. (AP) – Officials will review old Virginia criminal cases that involved the testing of blood types, following the exoneration of a man who spent 33 years in prison for crimes he did not commit. The Richmond Times-Dispatch reports Virginia Department of Forensic Science Director Linda Jackson told the agency’s board members Wednesday that they’ll start reviewing 200 cases from 1982, 1986 and 1990 to look for any problems. The review stems from the case of Keith Allen Harward, who was released from prison last month after the Virginia Supreme Court agreed that DNA evidence proved he was innocent of the 1982 killing of a Newport News man and the rape of his wife. Harward’s lawyers have said blood-type evidence that cleared him decades ago was not revealed by a serologist.