By CBS 2 Chicago Staff

NAPERVILLE, Ill. (CBS) — A group of jewelry merchants were robbed this weekend outside a hotel in Naperville.

At 10:52 p.m. Saturday, Naperville police were called to the Marriott Hotel at 1081 N. Naper Blvd. for a robbery.

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They learned that some jewelry salespeople had just completed a private showing and were leaving, when three masked men forcibly took cases of their merchandise in the parking lot.

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One of the merchants got into a struggle with one of the robbers, before the robbers all sped off in a van in which two other men were waiting, police said. The merchant was not injured.

The robbers were wearing masks, dark clothing, and gloves, and the other two suspects in the van were also wearing dark clothing.

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Anyone with information is asked to call the Naperville Police Department at (630) 420-6665 and ask for the investigations division.

CBS 2 Chicago Staff