One robbery happened shortly after midnight near 92nd Street and Central Avenue, according to the Los Angeles Police Department. The other incident occurred 5 to 10 minutes later at 103rd and Compton.
Police could not say what the suspects got away with in both incidents, but no injuries were reported.
Video shows suspect slam man into taco truck during armed robbery in South LA
Earlier this week, another taco truck was robbed in South L.A.
The suspect in that case threatened a man with a gun and took off with money.
The LAPD does not believe that the Monday incident is related, but investigators are looking into whether the two latest robberies are possibly connected.