By Asal Rezaei

CHICAGO (CBS)– A man stole a security guard’s gun during an ATM robbery in Avondale Wednesday night.

Just before 11 p.m., a security at a Bank of America, in the 3200 block of West Belmont Avenue, was approached by a man who reached for the guards gun.

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Police say there was a struggle before the thief got the gun and threatened to shoot the guard if he didn’t empty the ATM.

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The security guard filled a black bag with cash before the suspect took off with the money.

Police said the security guard was not hurt during the robbery.

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This incident is under investigation.