Who's opening for Katy Perry? What songs are on her tour setlist? Everything to know about the concert at PHX Arena (formerly ...

A woman walking along the shoulder of Interstate 10 in Tucson Friday was shot and killed during an altercation with a state trooper, authorities say.

A driver who tried to run across Interstate 10 north of Tucson early Monday was struck by "several vehicles," and killed, authorities say.

Interstate 24 East in Rutherford County following a brief closure caused by a multi-vehicle crash.