Kiener Plaza shooting suspect arrested and investigated, victim remembered as always smiling.

A 17-year-old suspect was arrested after a shooting at Kiener Plaza in St. Louis left a man dead. Police announced they would be seeking federal prosecution, which is rare for a juvenile case. Little is known about the suspect or the charges he could face, but he may be tried as an adult. The move to federal prosecution could be connected to the chaos at the local prosecutor's office. It could be days, weeks, or even months before we learn more about the case.