A video posted online of the incident showed a red SUV plowing through the parade, appearing to run over more than a dozen people.

At least some people were killed when a sports utility vehicle sped through a Christmas parade in Waukesha, Wisconsin, on Sunday, bowling over at least 20 people including several youngsters waving pompoms and a group of "Dancing Grannies."

Waukesha Police Chief Dan Thompson said a person of interest was in custody and the suspect vehicle had been recovered after the incident in Waukesha, about 20 miles (32 km) west of Milwaukee.

"The vehicle struck more than 20 individuals. Some of the individuals were children and there are some fatalaties as a result of this incident," Thompson told reporters.

Asked about the fatalities, Thompson said: "I don't have an exact number at this time."
It was not known whether the incident was related to terrorism, he added.

UPDATE: Police confirmed Sunday night that there were multiple deaths and at least 20 people were injured when a car