Police believe that the shooting is related to a family dispute. The FBI announced that there was no further suspected threat to the community.
A Fox News source says "at least 3" people were detained overnight amid a swarm of activity near the home of Nancy Guthrie.
"Just tracking down leads. No arrests. And no signs of Nancy," Pima County Sheriff says after Friday night SWAT operation at Tucson home less than two miles from Guthrie's residence ...