A federal judge held Minneapolis lawyer William Butler in contempt for failing to pay about $80,000 in sanctions in a mortgage case and asked Minnesota’s U.S. attorney to collect the sanctions and consider criminal proceedings against him.

U.S. District Judge Patrick J. Schiltz in Minneapolis issued the order on Tuesday in Welk v. GMAC Mortgage LLC. He cited Butler failing to comply with his August 2012 order to pay a $50,000 court sanction and nearly $30,000 in opposing attorneys’ fees.