A gunman and three other people were killed Thursday afternoon in a murder-suicide in a business development center in St. Louis, according to police. Two men and two women, all in their 40s and 50s, died in the shooting, which local NBC affiliate KSDK and the St. Louis Dispatch both reported took place where the Cherokee Place Business Incubator, which renovates buildings and leases them as work spaces, is located. The gunman had worked at the business and gotten into an argument with the three victims before he opened fire with a semi-automatic handgun, a police captain said. Please check back for updates on this breaking story.
