NAPERVILLE, Ill. (AP) — Some jewelry merchants have been robbed following a private showing in suburban Chicago.

Police say the merchants were leaving the showing at a hotel late Saturday night in Naperville when they were confronted by three masked men.

Cases of merchandise were taken by the masked men who fled in a van occupied by two other men. No other details about the robbery or value of the merchandise taken were released by police. Naperville is about 28 miles west of Chicago.