Did Nancy Guthrie Kidnappers Escape Using Tunnels?

Tips are flooding in. The $1 million dollar reward NBC News journalist Savannah Guthrie is offering for information about her missing mother is generating an avalanche of new information. Nancy Guthrie was reported missing from her Tucson, Arizona, home on February 1. One new theory about the missing octogenarian suggests that Guthrie's kidnappers used a tunnel in Tucson to escape. Some of those tunnels go all the way to the Mexican border. Inside Edition's Jim Moret has more.