At least 10 dead in shooting at Colorado supermarket

A gunman killed 10 people at a King Soopers in Boulder on Monday afternoon, the latest of mass shootings in Colorado — this one including among its victims a police officer who was first to respond to reports of shots fired at the grocery store.

The suspect was taken into custody. Officials said it would take days to investigate the large crime scene and to notify families that their loved ones had been killed.