Condemned South Carolina inmate Brad Sigmon has chosen to die next month by a firing squad, a method of execution that has not been used in the U.S. in 15 years.

Brad Keith Sigmon is set to be executed by firing squad on March 7 for the 2001 beating deaths of his ex-girlfriend's parents, David and Gladys Larke.

Brad Sigmon, who used a baseball bat to kill his ex-girlfriend's parents at their home in Greenville County, California, didn't pick the electric chair because it would "burn and cook him alive"

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