Ryan Joseph Sadoski, 18, of Huntley.

An 18-year-old Huntley High School student was arrested during an overnight search warrant after he allegedly posted a photo of a gun with a threatening message on social media.

The Huntley Police Department said that Ryan Joseph Sadoski, 18, of the 10500 block of Fleetwood Street in Huntley, was charged with disorderly conduct, a class 4 felony.

Huntley Deputy Chief of Police Mike Klunk said that Sadoski allegedly posted a photo on Snapchat of a gun with a threatening caption. Another student reported the photo to school administration on Thursday and police were notified.

Detectives identified Sadoski as the suspect and conducted a search warrant at 3 a.m. on Friday at Sadoski’s home. “Items of evidentiary value were removed from the residence as a result of this investigation and pursuant to the search warrant,” Klunk said.

He did not specify what items were found during the search. Sadoski was arrested and transported to the McHenry County Jail to await a bond hearing. No one else was involved in the threat, police said.

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“Out of an abundance of caution, an extra police presence will be in place at HHS Friday as a visible reassurance for students and staff. The school day will operate as normal, and the student who posted the threatening image is being kept from the school environment,” Huntley High School Principal Marcus Belin said.

“We encourage all members of the community to continue to partner with us in keeping our schools safe by reporting any potential threats to the school and/or police.”