SAN JOSE (CBS SF) — A spectator was seriously injured Saturday night while watching one of several illegal sideshows in San Jose.

San Jose police tweeted Sunday that their officers had been busy overnight, responding “to various side shows throughout the city.”

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At one of the illegal street racing events, a spectator suffered serious injuries after being hit by a car.

“Last night’s injury to a spectator illustrates how dangerous these events can be,” police posted. “In addition, we will continue to respond with available resources.”

There were no details released as of early Sunday morning on where the injury took place or the victim’s condition.

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Officers issued 17 citations for equipment violations, but there was no information if the driver who struck the spectator had been arrested.