Mollie Tibbetts, missing Iowa college student, found dead

CBS News has learned that Iowa college student Mollie Tibbetts has been found dead, just over a month after she was reported missing. The 20-year-old was last seen July 18, jogging near her home in the central Iowa town of Brooklyn. Her family reported her missing the following day when she didn't show up for work. Her disappearance set off a massive investigation and weeks of fruitless searches.Police have scheduled a news conference for 6 p.m. Tuesday to provide an update on the latest develop