Four people have been reported dead and several others are in custody after a shooting at a St. Louis business, according to law enforcement officials.
Police say two men and two women were shot dead at about 1:40 p.m. at the Cherokee Place Business Incubator. There is no active search for suspects.
St. Louis police have already tweeted that they believe the shooting was a murder-suicide and that "the shooter and three victims are deceased."
The 4,000-square-foot building houses 10 small businesses. The city's Post-Dispatch reports that the shooter opened fire after a brief argument inside.
The building was evacuated and police interviewed witnesses on the scene.
One witness, Kevin Johnson, told investigators he was having lunch across the street when he saw a barefoot woman run out of the business screaming.
She met with arriving officers and pointed to the business.
Several people seen taken out in handcuffs on the scene were reportedly not actually suspects in the crime; they were simply inside during the shooting.
Michael Graff, who has a law office inside the building, said the business where the incident took place is owned and staffed by Somalian immigrants.
Heated arguments coming from the business have reportedly been frequent, though it's unclear why or whether they were related to this tragedy.