Independence police are trying to figure out what led to a multiple shooting near Denny's

<p>TINLEY PARK, IL - MARCH 11: Handguns are offered for sale at Freddie Bear Sports on March 11, 2015 in Tinley Park, Illinois. According to a survey conducted by the University of Chicago 32 percent of Americans own guns, down from a high of 50 percent of the population in the 1970s and early 1980s. (Photo by Scott Olson/Getty Images)</p>