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A 17-year-old Brookfield boy is in custody after allegedly raping a 17-year-old girl at Mary Knoll Park in the city of Brookfield last month.

William M. Hoffman has been charged in adult court with one count of second-degree sexual assault, one count of strangulation and suffocation, and one count of possessing a dangerous weapon on school premises.

The charges carry a maximum penalty of more than 46 years in prison.

According to a criminal complaint, Hoffman picked up a 17-year-old girl on the evening of Dec. 7 to hang out and take a drive.

That drive ended up in the parking lot of Mary Knoll Park, 615 S. Sunny Slope Road, where Hoffman parked the car.

The girl told a forensic interviewer at the Waukesha County C.A.R.E. Center that she asked Hoffman what he wanted to talk about at which point he grabbed her and began to kiss her. The girl stated that the two had kissed in the past.

According to the complaint, Hoffman proceeded to command the girl to take her clothes off and to get into the back seat of the vehicle where he then raped her. During the assault, the victim stated that Hoffman also choked her and that “it felt like she was going to die.”

The girl said that she was scared during the encounter and that she expected that Hoffman had a weapon with him because she knew from past interactions that he “has a knife on him at all times.”

Hoffman later drove the girl back to her residence and pulled out a knife described as being in a black case container and put it on the driver’s console, the complaint said. When the girl attempted to exit the vehicle, Hoffman allegedly grabbed her and told her to kiss him.

City of Brookfield police arrested Hoffman at Brookfield Central High School Wednesday, Jan. 4. According to the complaint, police located a knife in Hoffman’s backpack and another in his car.

Hoffman has been ordered to have no contact with the victim, a witness, or Brookfield Central. He is also not to possess any controlled substance without a valid prescription and not to possess any weapons.

Bond has been set at $10,000 cash or $50,000 signature.

A preliminary hearing is scheduled for Feb. 3.

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