On October 6, 2019, 29-year-old Justin Gibbons of Mayville was shot during an altercation in an alley off West Main Street in Sherman, New York.

Investigators identified Julio E. Montanez of Jamestown as the person alleged to have fired the shots. Montanez was arrested and initially charged with manslaughter; a County Court judge later dismissed that indictment because of errors in the grand jury questioning. He was re-indicted on charges that included second-degree murder and two counts of second-degree attempted murder. The prosecution was later handled by the Cattaraugus County District Attorney’s Office.

In September 2021 Montanez pleaded guilty to criminally negligent homicide, and in November 2021 he was sentenced to one and one-third to four years in state prison for the death of Justin Gibbons.