A red SUV speeds past attendees moments before plowing into a crowd at a Christmas parade in Waukesha, Wisconsin, U.S., in this still image taken from a November 21, 2021 social media video. CITY OF WAUKESHA/Facebook/via REUTERS

A crime scene police tape is put at the street after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 22, 2021.

A police car is seen at Main Street in downtown Waukesha, as it's blocked off after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 22, 2021.

Police officers search for evidence after a vehicle plowed through the Christmas Parade, leaving multiple people injured in Waukesha, Wisconsin, U.S. November 21, 2021. Scott Ash-USA TODAY NETWORK via REUTERS

Chairs are left folded on Main Street after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 22, 2021.

A stroller lays abandoned on the street after a vehicle plowed through the Christmas Parade, leaving multiple people injured in Waukesha, Wisconsin, U.S. November 21, 2021. Scott Ash-USA TODAY NETWORK via REUTERS

Downtown Waukesha is blocked off after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 22, 2021.

An ambulance crosses Main Street in downtown Waukesha after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 22, 2021.

Police inspect the crime scene after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 22, 2021.

Emergency personnel respond to the scene after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 21, 2021.

Chairs are left abandoned after a car plowed through a holiday parade in Waukesha, Wisconsin, U.S., November 21, 2021.

Police investigate after a vehicle plowed through the Christmas Parade, leaving multiple people injured in Waukesha, Wisconsin, U.S. November 21, 2021. Mike De Sisti-USA TODAY NETWORK via REUTERS

Police and emergency responders gather after a vehicle plowed through the Christmas Parade, leaving multiple people injured in Waukesha, Wisconsin, U.S. November 21, 2021. Scott Ash-USA TODAY NETWORK via REUTERS