Marcus Romaine Cargill Jr., 19, was shot and killed on February 15, 2024, in downtown Mankato near 4th and Walnut streets. Authorities found him around 2:30 p.m. with gunshot wounds to his upper body; he was taken to a hospital and later died.

Investigators say the shooting followed a long-running feud between Cargill and 17-year-old Emmanuel Lavelle Isaac that had included social media disputes and a physical fight the previous Halloween. On the afternoon of the shooting Cargill approached a vehicle where Isaac was a passenger, an argument broke out, and Isaac fired multiple close-range shots, striking Cargill five times. Isaac fled the scene but was later apprehended in Breckenridge along with two others; search warrants recovered a 9mm pistol believed to be the weapon.

Anyone who was in downtown Mankato that afternoon or who knew Cargill is asked to share information that could help complete the picture of what happened.