The incident took place around 4 a.m., Sunday, Feb. 16 at the Queens Boulevard McDonald's in Long Island City, said the NYPD.
According to police, three unidentified individuals approached the drive-thru window of the restaurant in a black sedan. Two entered the restaurant by climbing through the window, while the remained in the car.
Once inside, the men pulled a firearm and demanded money from a safe from a store employee. The employee complied and the individuals fled eastbound on Queens Boulevard in the vehicle with more than $3,600 in cash, police said.
There were no injuries reported.
Anyone with information in regard to the identity of the individuals is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
The public can also submit their tips by logging onto the CrimeStoppers website at WWW.NYPDCRIMESTOPPERS.COM, on Twitter @NYPDTips.
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