Police are looking for security camera video or other clues that could lead them to the person who shot and killed a letter carrier as she walked her route on Chicago's Far South side this morning. WBBM's Terry Keshner reports from Oak Lawn. 

<p>Police are looking for security camera video or other clues that could lead them to the person who shot and killed a letter carrier as she walked her route on Chicago's Far South side this morning. WBBM's Terry Keshner reports from Oak Lawn. </p>

Advertisement