(AP) — Hutchinson police say four people have been arrested as suspects in about 20 cases of counterfeit money being used in the city this month.

Police Sgt. Tyson Meyers says three men were arrested Tuesday and a woman was arrested Wednesday. He says the three men apparently worked together but the woman’s connection to the cases is unclear.

Officers believe most of the counterfeit cash seized so far came from the home of a 37-year-old man arrested Tuesday. They found a scanner and printer at the man’s home.

So far this month, police have collected more than 50 $5 and $20 bills.