The Brief A Dallas man has been arrested and charged with murder after confessing to intentionally hitting and killing a man with his car. Dallas police arrested Marko Chavez, 22, on a murder warrant after he confessed to intentionally hitting a man with his car on Sept. 20. Marko Chavez (Source: Dallas County Jail)Fatal hit-and-runTimeline:Chavez's arrest follows an investigation into the death of 26-year-old Calan Gilbert, who was found dead on Donald Street in Dallas. The police found an orange car bumper near the scene. What they're saying:FOX 4's David Sentendrey met a man named Robert in South Dallas on Monday afternoon, while walking along Donald Street.