A 24-year-old man, Montrez Heart of Hillsdale, was shot and critically wounded on the afternoon of July 10, 2024, in the Mark Twain/I-70 Industrial neighborhood of St. Louis. Heart was transported to a local hospital around 3:50 p.m. with a gunshot wound and, unable to speak to investigators because of the severity of his injuries, died there on July 12, 2024.

St. Louis Metropolitan Police Department Homicide Division took over the investigation, which detectives say grew out of a workplace dispute. Investigators urged anyone with information to come forward and offered potential rewards for anonymous tips. In the week after the shooting, two men were arrested: a 47-year-old taken into custody July 18 and later charged with Murder in the 1st Degree and Armed Criminal Action, and a 51-year-old arrested July 19 with charges being sought.

Did anyone in the Mark Twain/I-70 Industrial area see activity or persons connected to the shooting on July 10?