Retail stores already under siege from pandemic restrictions and supply chain hiccups are increasingly facing another threat to their bottom lines: organized theft.

The problem was on vivid display over the weekend when dozens of looters stormed into a Nordstrom department store outside San Francisco wearing masks and wielding crowbars. As many as 80 suspects snatched armloads of products and sped away in more than 20 waiting cars on Saturday. Police have so far arrested just three suspects in connection with the raid.