articleThe Brief A man was shot and killed on Saturday morning in the 2700 block of Donald Street in Dallas. Police have arrested 22-year-old Marko Chavez and charged him with murder in connection with the shooting. The Dallas Police Department's homicide unit is continuing to investigate the incident. Dallas Police responded to a shooting call in the 2700 block of Donald Street at around 9:15 a.m. on Saturday morning. What's next:This ongoing investigation by the Dallas Police Department's homicide unit.