WICHITA, Kan. (AP) — A federal judge imposed on Wednesday more than $26,000 in sanctions against Kansas Secretary of State Kris Kobach as punishment for his "contemptuous behavior" during a voting rights case that challenged the state's proof-of-citizenship registration law.

U.S. District Judge Julie Robinson found Kobach in contempt in April stemming from a 2016 preliminary injunction. The decision handed down Wednesday specified the amount of attorney fees and expenses awarded after considering arguments from the parties.

Robinson ruled in June that Kansas cannot require documentary proof of...