According to the Los Angeles Police Department, the robberies occurred the weekend after Thanksgiving on Nov. 27 through Nov. 29.
The three suspects went into the stores and two approached the counter while the third stood at the door as a lookout. One suspect remained in front of the counter while the other walked behind the counter with a gun pointed at the clerk, demanding money.
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The suspects fled the stores with money and cigars, according to police.
They're all being described as being in their early 20s.
Anyone with information about the robberies was asked to call detectives at 213-486-6840 or 877-LAPD-24-7. Anonymous tips can be left at Crime Stoppers at 800-222-TIPS (8477).