Police responded to two large, overnight sideshows in Vallejo and Oakland.
Huge crowds gathered in Vallejo at around 11 p.m. Saturday in the area of Columbus Parkway and Georgia Street.
About 100 spectators blocked the road as they watched the dangerous stunts in the middle of the intersection.
Police said they broke up the crowds in about 20 minutes. They arrested at least four people and impounded a car.
Then a few hours later, another sideshow popped up in Oakland near 90th and MacArthur.
Oakland police were seen a block away, monitoring the crowds.
Video captured what sounded like gunshots, coming from the area of the sideshow.
NBC Bay Area reached out to Oakland police Sunday for more information and they released the following statement:
"The Oakland Police Department (OPD) Communications Division received multiple reports of several dozen vehicles and spectators engaging in illegal sideshow activity on October 23, 2022, in the 9000 block of MacArthur Boulevard, just after 2:00 AM. There were also reports of individuals discharging firearms and setting off fireworks within the group. When officers arrived, the vehicles and spectators began to disperse the area. It does not appear that any citations were issued and any arrests were made at this time."
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