The Kansas City, Missouri, police department is asking for the public’s help to curb illegal street racing after seven people were shot in weekend incidents that included more than 1,000 people and hundreds of cars.

A total of seven shooting victims are known to police at this time, and police said their injuries range from minor to life-threatening.

Around 9 p.m. Saturday, police said they discovered more than 1,000 people and hundreds of cars engaged in illegal racing activity at 7100 Eastwood Trafficway. Police said officers dispersed the group, but numerous disturbances started after the groups splintered off and congregated again elsewhere.

Then around 12:30 a.m. Sunday, KCPD said multiple officers were dispatched to reported shootings simultaneously at 3801 Blue Parkway, another at Coalmine Road and Manchester, and to a hospital where multiple victims walked in with gunshot wounds.

Police said officers located a large crime scene at Blue Parkway and Colorado that spanned a long distance on Coalmine Road. Police spoke with many witnesses, all of whom said there were hundreds of vehicles and spectators for street-racing on Coalmine Road.

Then at 1:22 a.m. Sunday, officers working off-duty security at a convenience store in the 6500 block of Front Street reported street racers had showed up there.