PHOENIX (AP) -- A Secret Service spokesman says a man suspected in a weeklong bank robbery spree that spanned from Georgia to Arizona and included the shooting death of a Mississippi police officer was arrested in 2010 after making online threats against the president.
The spokesman says Mario Edward Garnett was living in Oklahoma City at the time of the arrest, He won't say how the case was resolved.
Authorities have connected Garnett to a Dec. 23 bank robbery attempt in Atlanta, a bank robbery later that same day in Tupelo, Miss., and the shooting death of one officer and the wounding of another just after the Tupelo robbery.
A Phoenix detective shot and killed Garnett just after he robbed a bank Saturday morning.
A Phoenix police spokesman says the 40-year-old Garnett was from the Midwest, had served for four years in the U.S. Army and appeared to have no friends or relatives in Arizona.