CHICAGO (WLS) -- Chicago police are putting businesses on alert after a series of brazen robberies in November targeting stores downtown, including along Michigan Avenue and State Street.
Police said thieves have hit stores in the 700-block of North Michigan Avenue, the 1200-block of North Larrabee Street, the 800-block of North Michigan and the 900-block of North State Street, all in the afternoon hours.
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While inside, the robbers take merchandise by force. Police said in one case one of the suspects showed a handgun.
Investigators said the robberies are being carried out by several different people but what they all have in common is the use of force.
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Police are now warning businesses to encourage their employees to review store policies and not to engage the armed robbers.