KANSAS CITY, Mo. (AP) — Police are investigating after four people were injured during a shooting in Kansas City's 18th and Vine Jazz District. The Kansas City Star reports that two large groups of people gathered in the streets and started shooting at each other early Sunday outside The Juke House bar. One man was found lying on the sidewalk in front of the bar suffering from what appeared to be a wound to the upper torso. Police said the man was taken to a hospital and was listed in serious condition. The other three victims also appeared to have been shot, although their injuries weren't believed to be life-threatening. One of those victims flagged down paramedics, while a bar patron drove another person to a hospital. The final victim drove to a hospital.