LYON, France (AP) — A “low force” blast hit a busy pedestrian street Friday in the French city of Lyon, injuring seven people as it shattered the glass from a refrigerated shop cooler, a local official said.

Denis Broliquier, mayor of Lyon’s second district, told BFMTV he arrived minutes after the 5:30 p.m. explosion at the bakery chain Brioche Doree in Lyon’s central Presqu’ile area, which lies between the Rhone and Saone rivers that run through France’s third-largest city.

“What I saw was a refrigerated cooler in the Brioche Doree, whose windows had been shattered. It was the windows … that superficially injured the people who were 1, 2 or 3 meters (yards) away,” Broliquier said. “But the fridge itself wasn’t that damaged, which means the device had low force,” Broliquier said, downplaying the incident.