Reward offered in hunt for letter bomber

CHICAGO, Feb. 27 (UPI) -- U.S. postal inspectors are offering a $100,000 reward for the arrest of the person who sent mail bombs to investment firms in Chicago and Kansas City, Mo.

Pipe bombs were mailed to American Century Investments in Kansas City on Jan. 31 and to Perkins, Wolf, McDonnell & Co. in Chicago's Loop on Feb. 2, the Chicago Sun-Times reported.

Investigators say neither bomb was triggered to explode and they were both accompanied by notes that said "Bang, you're dead." The notes were signed "The Bishop."