Former New York Supreme Court Justice Peter J. McQuillan, known for decades of work involving matters of criminal law, has died at the age of 90, his family announced earlier this week.

McQuillan, who served 20 years on the court, remained active in criminal law after his retirement in 1992, compiled a widely read newsletter for the Innocence Project that focused on DNA exonerations in criminal court cases around the world, his family said in an obituary posted on Legacy.com.