The man at the center of the Supreme Court's landmark ruling on tribal jurisdiction pleads guilty to federal sex abuse charges.

Jimcy McGirt is already serving a life sentence for a previous conviction.

He is 75 years old, and is facing another 30 years for the new guilty plea.

Here is the full statement from the Department of Justice:

The United States Attorney’s Office for the Eastern District of Oklahoma announced today that Jimcy McGirt, age 75, of Holdenville, Oklahoma, entered a guilty plea to one count of Aggravated Sexual Abuse in Indian Country.

The guilty plea was the result of a written plea agreement which recommends the district judge sentence McGirt to thirty years in prison, followed by a five-year term of supervised release. The parties also recommend McGirt be given credit for the time he previously served in both state and federal custody on previous convictions related to this case.

The Honorable Jason A. Robertson, U.S. Magistrate Judge in the United States District Court for the Eastern District of Oklahoma, presided over the plea hearing in Muskogee and ordered the completion of a presentence investigation report. McGirt will remain in the custody of the United States Marshal until the sentencing hearing, at which time the court will determine whether to accept the plea agreement.

Assistant United States Attorneys Sarah McAmis and Kyra Jenner represented the United States.