Robert Carey, 52, of Chicago was sentenced by Cook County Judge Matthew Coghlan, the office said in a release.
On Jan. 28, 2011 Carey and his accomplice Jimmy Townsend tried to rob an armored car guard outside a Dollar Store near Chicago and Homan Avenues on the West Side, authorities said.
Although Carey had a .22 caliber handgun and Townsend had a sawed-off shotgun, the guard shot and killed Townsend while Carey was shot and wounded by the guard's partner during a struggle for a money bag, prosecutors said.
A jury previously had convicted Carey of first-degree murder because Townsend was killed during the robbery attempt.
Source: Chicago Tribune