Protesters in Wisconsin smashed windows of homes during the civil unrest following prosecutors announcement that they would not charge a Black Wauwatosa police officer for fatally shooting a Black teenager outside a shopping mall in February, according to Fox News.

“What started as a protest has become a large disturbance of public order that has caused property damage, and is threatening to cause injury to persons. The Wauwatosa Police has ordered dispersal, and has not obtained compliance,” Wauwatosa Police tweeted.

“While not all members of the group intend harm, everyone must disperse immediately. Police are working to disperse this group.”

In a statement, U.S. Attorney Matthew Krueger said federal law enforcement personnel have partnered with state and local authorities to address any potential violence.

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“Federal law enforcement in Wisconsin is sworn to protect First Amendment rights, which include the rights to speak and assemble ‘peacefully,'” he said.

“In the past year, however, in addition to witnessing peaceful protests, some Wisconsin communities have suffered episodes of violent civil unrest.

“Federal law imposes serious penalties for arson, rioting, firearms offenses, and other violent crimes, which we will prosecute to the fullest extent possible,” the statement continued.

“No one else in Wisconsin should become a victim of needless violence or face destruction of a business as a result of unrest.”

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More from Fox News:

Wauwatosa Police said they deployed tear gas at least twice late Wednesday into early Thursday after crowds failed to disperse in the suburb outside Milwaukee despite officers declaring an unlawful assembly multiple times. The department retweeted a video from Town Hall reporter Julio Rosas showing demonstrators smashing storefronts along Swan Boulevard and W. North Avenue.

Police had urged residents in the area to shelter in their homes, lock their doors and move away from their windows as a crowd of demonstrators swept the area, throwing large rocks at law enforcement.

Wauwatosa Police and Mutual Aid officers also responded to multiple reckless vehicles on main roads in Wauwatosa. There were reports of high rates of speed exceeding more than 25 mph over the speed limit, driving on the wrong side of divided highways, and driving over curbs and medians.

Police said these vehicles were endangering the safety of the public, and officers were deploying tire deflation devices to promptly stop the reckless behavior.

The unrest was sparked after Milwaukee County District Attorney John Chisholm declined to pursue charges against Wauwatosa Officer Joseph Mensah, who is also Black, for his involvement in the Feb. 2 death of Alvin Cole. It was the third fatal shooting involving Mensah, authorities said.