In this file photo, police tape marks the scene of a shooting on the South Side of Chicago, Illinois, U.S.© SHANNON STAPLETON, REUTERS

mass shooting in Chicago left at least 12 people injured when two people fired into a crowd, police said.

Chicago police suspect a red SUV pulled up alongside a large crowd on the city’s far South Side late June 19, according to a police news release. Two people inside the SUV began firing shots toward the crowd before fleeing the area, police said.

Police officers initially responded just after 11 p.m. to a report of a person shot. They found a 32-year-old woman with two gunshot wounds on her back and a 44-year-old man who had four graze wounds to his back. Both were transported to local hospitals in good condition, police said.

In total, police said at least 12 people, between the ages of 17 and 47, had gunshot wounds. Most transported themselves to local hospitals. Two people, a 17-year-old boy and a 26-year-old man, were listed in critical condition.

There have been no deaths reported. A 13th person refused medical treatment after sustaining unknown injuries, police said in an update.

No arrests have been made, police told USA TODAY. No further details were available on June 20 as detectives still investigated the shooting.

On June 19, Chicago Mayor Brandon Johnson encouraged people to make safety a priority on Juneteenth, the national holiday commemorating the end of American slavery, and Father’s Day over the holiday weekend. An email to the mayor’s office was not immediately returned.

Earlier in the day, former President Barack Obama and former First Lady Michelle Obama welcomed visitors to the public opening of the Obama Presidential Center, also located on Chicago’s South Side. The center is less than 5 miles from the scene of the mass shooting.