Police believe the series of "flash robberies" started March 3 at stores throughout Boyle Heights and South L.A. Authorities say the group responsible is made up of 10 to 20 suspects.
They are believed to be between 15-25 years old.
Police say in each incident, the suspects rush into a store, steal clothing and other merchandise before getting away on bicycles.
"The suspects have used force and displayed a lack of regard for the safety of witnesses and victims," the department said in a press release.
Investigators believe the suspects are likely LAUSD students in schools near the targeted stores.