Police are crediting help from the public in locating 27-year-old Angel Provincial on the east side of Sioux Falls Friday night.
Tip calls helped identify Provincial as the gunman who held up the Crown Casino on Wednesday.
He was wanted for first-degree robbery and aggravated assault.
Police will release more information about Provincial's arrest during their Monday morning briefing.
Police have arrested a suspect in one of this week's armed robberies in Sioux Falls.