STORM LAKE, Iowa — A Minnesota supporter of President Trump is facing a disorderly conduct charge stemming from a weekend altercation at an Iowa rally for Democratic Sen. Elizabeth Warren.

Photos from Warren’s rally Saturday in Storm Lake show 58-year-old Randal Thom, of Lakefield, Minn., carrying a sign that read ‘‘Keep America Great’’ — which was a reference to Trump’s ‘‘Make America Great Again’’ 2016 campaign slogan.

Police say Thom was involved in an argument with supporters of the Massachusetts senator that turned physical, and that some punches were thrown. There were no injuries and no one else was arrested.