Protesters in Minneapolis smashed windows and, in some cases, appeared to loot several retail stores after police said a homicide suspect killed himself on a downtown street late Wednesday, a CBS affiliate reported. In a late-night briefing, Mayor Jacob Frey said he had implemented an immediate curfew and requested the National Guard. “What we are calling for right now is peace,” he said. Gov. Tim Walz said the State Patrol was headed to Minneapolis to help restore order.

According to local police, the man was tied to a fatal shooting several hours earlier, and shot himself as police approached him. “There is no question that this was a suicide,” police spokesman John Elder said. Police tweeted CCTV that appeared to show the man shooting himself in the head and falling to the ground seconds before officers reached him. The incident took place around the same time law-enforcement officials in Wisconsin identified the cop who shot 29-year-old Jacob Blake on Sunday as Kenosha PD officer Rusten Sheskey.