Aaron Cowan was 17 when he was shot and killed outside a residence at 762 South Union Street in Lima, Ohio, on November 9, 1996. Cowan was attending a party and had been standing outside when multiple rounds were fired toward the house at about 12:50 a.m.; he was struck and died at the scene. At least three other people were wounded in the same attack.

The homicide remains unsolved. The Lima Police Department and the Ohio Bureau of Criminal Investigation have publicized the case and are asking for the public’s help. Tips can be passed to the Ohio Attorney General’s office or to Crime Stoppers, which accepts anonymous leads.

If anyone was at that party or in the area of South Union Street that night and has information, please contact authorities.