Gov. Mary Fallin sentenced an Oklahoma inmate serving time on drug charges to life in prison when she denied his medical parole, the offender’s sister says.

Mary Ladd said her brother, Wendell Green, has cirrhosis of the liver, among other ailments, and was told by doctors early this year he would likely not live past May.

Green has been incarcerated since 2000 on two drug charges. Ladd said her brother was caught in 1999 with methamphetamine and the tools necessary to manufacture the drug. He is due for release in 2019.

Green also served time on convictions in Arkansas throughout the 1980s and 90s, including burglary, battery, and possessing a firearm after a felony conviction, according to the Arkansas Department of Correction. He is incarcerated at the Lexington Assessment and Reception Center.