Shoppers at the Brent Cross mall in London, England, may have thought a movie was being filmed on Tuesday morning.
Fifteen minutes after the mall opened, six masked robbers on three motorcycles rode through the second floor, wielding axes and bats.
They stopped at the Fraser Hart jewelry store, where they smashed windows and grabbed grabbed Cartier and Rolex watches.
Police estimate their robbery to be worth about 2 million British pounds, or $3.1 million.
A customer, Rick Triester, recorded the robbery on his cell phone (video below).
No one was injured during the daring robbery, and police are continuing to search for clues.