Two men and two women were shot dead Thursday afternoon in a murder-suicide after an argument at a St. Louis business, police reported.
A semiautomatic handgun was recovered.
The shooting occurred about 1:45 p.m. CT (2:45 p.m. ET) on Cherokee Street, in the south end of the city, KSDK-TV said. The gunman worked at a home health care business inside the Cherokee Place Business Incubator, said Police Capt. Michael Sack.