BURNSVILLE, Minn. (WCCO) — Authorities in the Twin Cities say a group of up to 30 people robbed a Best Buy store in the south metro on Black Friday.

The Burnsville Police Department says that the group entered the Best Buy location near Burnsville Center shortly after 8 p.m., stole electronics and fled before police arrived. No one in the group displayed a weapon and no injuries were reported.

So far, no arrests have been made, and it’s unclear how much merchandise was stolen from the store.

Maplewood police say that six people robbed a different Best Buy near Maplewood Mall. The people then fled in several vehicles.

While the robbery is under investigation, it resembles other “mass robberies” seen across the country. In such cases, several robbers swarm a store, ransack the shelves and run away, sometimes assaulting shoppers and store employees in the process.