Two men opened fire inside a bar in Kansas City, Kansas, early Sunday, killing four people and wounding five others in a shooting believed to have stemmed from an earlier dispute, police said.
Authorities were searching Sunday for the two gunmen, said Officer Thomas Tomasic, a police spokesman.
He said the two men had apparently gotten into some sort of disagreement with people inside Tequila KC Bar, left, then returned with handguns.
"We think there was something that happened in the bar earlier probably," Tomasic said.
"Unfortunately, they left and decided to take it to another level, came back and started shooting."