Police investigate after shots were fired at a house in the 17700 block of West Horseshoe Lane in unincorporated Gurnee Thursday evening | Photo: Woo-Sung Shim / Lake and McHenry County Scanner.

A boy who went to a 17-year-old’s home in unincorporated Gurnee to collect money for a shoe sale was shot during a struggle over a gun on Thursday, police said.

The Lake County Sheriff’s Office and Gurnee Police Department responded around 5 p.m. Thursday to the 17700 block of West Horseshoe Lane in unincorporated Gurnee for a report of shots fired.

Lake County Sheriff Spokesman Sgt. Christopher Covelli said that two 17-year-old boys went to the residence to collect payment from another 17-year-old boy, who lived at the home, for shoes one of them sold to the boy two weeks prior.

When the two boys, one a Gurnee resident and the other a Park City resident, knocked on the door, the 17-year-old opened the door and flashed a semi-automatic pistol in his waistband during the conversation, Covelli said.

After flashing the gun from his waistband, the 17-year-old resident reached for it, and a physical fight between the three ensued, Covelli said. The 17-year-old resident fired one shot at the two boys, striking the Gurnee boy in the inner-thigh area of both legs. Both of the boys fled from the scene in fear for being shot again, police said.

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“The juvenile who sustained the gunshot wound attempted to tend to his injury on his own, without telling anyone else he had been shot. When Sheriff’s Detectives spoke with him and saw his injury, detectives ensured the juvenile received medical treatment,” Covelli said in a statement.

The gun involved was recovered late Thursday evening and all three boys knew each other from previously attending the same school.

On Monday, the 17-year-old boy, who lives at the residence on Horseshoe Lane in Gurnee, was petitioned to the juvenile justice system on charges of aggravated discharge of a firearm, a Class 1 felony, and aggravated assault, a Class 4 felony.

The juvenile is being held at the Hulse Juvenile Detention Facility in Vernon Hills pending a juvenile detention hearing.