We're back now with the urgent manhunt underway in Tennessee for a suspected killer. Officials say four people were found dead in a car Tuesday, including the parents of a baby who was located by authorities just hours before. The child had been abandoned in a random front yard in a neighboring county.I want to bring in NBC's Jesse Kersh who's been following this for us. Jesse, this one is just so tragic. Police IDed a suspect today.What more do we know about him. They identified the suspect. They released ...

We learned an arrest was made in the double murder of a married couple killed while hiking in Arkansas with their two young daughters. NBC News correspondent Sam Brock joins us with the latest on these developments. Sam, good morning. >> Good morning.This was 5 days, Joe, of fear and unease before Arkansas State Police say they arrested 28-year-old James Andrew Mcan at a local barber shop. Like the Brinks, who moved to Arkansas 3 weeks ago, authorities say man had also recently moved from out of state for a ...