EXCLUSIVE: The public must be cautious about speculating on a motive for Sunday night’s Christmas parade horror in Waukesha, the president of the Wisconsin Fraternal Order of Police informed Fox News in an interview . 

“Hours later, everything is still very fluid, right now,” Ryan Windorff mentioned late Sunday.  

The next step for investigators will probably be conducting witness interviews and reviewing footage from witnesses’ telephones and enterprise safety cameras, Windorff mentioned. 

“There are a countless number of witnesses that need to be interviewed,” Windorff mentioned. “Even if somebody didn’t witness something firsthand, they may have video on their home or business surveillance system that is going to benefit the investigation.”

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WATCH: Wisconsin Fraternal Order of Police president details what's next in the Waukesha investigationVideo

SEVERAL KILLED AFTER SUV MOWS DOWN CHRISTMAS PARADE MARCHERS, PERSON OF INTEREST IN CUSTODY

Video that circulated on social media shortly after the incident confirmed spectators standing alongside the route of the annual Christmas kickoff occasion as a maroon-colored Ford SUV careened via the parade line. 

Police tape limits access to the scene of Sunday's Christmas parade tragedy in Waukesha, Wisconsin, Nov. 21, 2021.

Police tape limits entry to the scene of Sunday’s Christmas parade tragedy in Waukesha, Wisconsin, Nov. 21, 2021.
(Getty Images)

Law enforcement will now start to develop a timeline of occasions to trace the exercise of the particular person believed to be driving the SUV, Windorff mentioned. 

“Law enforcement is going to want to retrace the incident from the first sign of it at the parade, but even go back before that in the days and weeks before leading up to it,” he defined.

Waukesha police Chief Dan Thompson mentioned late Sunday that an individual of curiosity was in custody and that police had recovered the automobile believed for use in the incident. Police didn’t instantly disclose a potential motive. 

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

Chairs are left deserted after a automobile plowed via a vacation parade in Waukesha, Wisconsin, Nov. 21, 2021. 

“I think at this point the terms ‘suspect’ and ‘person of interest’ are probably interchangeable,” Windorff mentioned. “If there is a motive that is even determined, it will be released. But, I would just caution people to not jump to conclusions.”

According to Waukesha metropolis officers, the incident resulted in at the very least 5 deaths and greater than 40 accidents, with a number of the victims being youngsters. 

Local police confirmed up for work Sunday anticipating a easy, peaceable parade task – but it surely become a nightmare state of affairs, Windorff mentioned.  

“This is a worst-case, horrific situation for law enforcement. They’re working parade duty essentially. It should be an easy day … and in a blink of an eye it turns into a horrible tragedy,” he mentioned.

Ryan Windorff, president of the Wisconsin Fraternal Order of Police

Ryan Windorff, president of the Wisconsin Fraternal Order of Police

Despite the ugly scenes on the bottom, Windorff informed Fox News that the courageous actions by police, first responders and bizarre residents provided a silver lining throughout a difficult time for the neighborhood. 

“In a horrible situation like this, I think some solace can be seen in acts of selflessness that we saw tonight in Waukesha.”