KANSAS CITY, Mo. (AP) — A man who admitted mailing death threats to three federal judges in Kansas City, Missouri, while imprisoned in Indiana has been sentenced to seven years behind bars without parole.

Forty-year-old Bruce DeWayne Jensen was sentenced Thursday in his hometown of Kansas City. That’s where he pleaded guilty in March to three counts of mailing threatening communications.

Jensen admitted that in November 2014 and in August of last year, he sent to three judges letters threatening to kill them and their families. At the time, Jensen was incarcerated at a federal prison in Terre Haute, Indiana.

Jensen has several previous convictions for similar threats.