Two children were rushed to hospital with gunshot wounds after shots were fired near a play park, before two cars were seen chasing one another.
Paramedics were called to Bushbury in Wolverhampton just after 3pm on Monday by shocked members of the public.
A 15-year-old boy and an 11-year-old girl, who had been in parkland off the road, both suffered gunshot wounds to their legs in the shocking incident.