Six people are now dead and several critically injured after a shooter opened fire in a Minneapolis sign business, the Associated Press reported, citing police and hospital staff.
The shooting took place at Accent Signage Systems, a company located in a mostly residential area of the city.
"We heard about four to five gunshots," Marques Jones, who was standing down the street when the incident happened, told the AP.
"We were shocked at what happened and we just looked at each other. We all just took off running to our vehicles."
The Denver Post reported that police scanner traffic indicated the shooter was among the dead.
The shooter was identified as Andrew Engeldinger, 36, a former employee of Accent Signage Systems who had recently lost his job.
The victims included company owner Reuven Rahamin, 61, and United Parcel Service driver Keith Basinski, 50. The names of the three other fatalities haven't been released, according to the Star Tribune.
NBC News interviewed eyewitnesses: