A man convicted of a double murder is scheduled to be executed in South Carolina Friday night by firing squad - a method that has not been used in the United States in almost 15 years, and never in the state.

A South Carolina convict who brutally killed his ex-girlfriend's parents with a baseball bat in 2001 is scheduled to be executed by firing squad on Friday – the first execution of its kind in U.S. in 15 years.

South Carolina has killed death row inmate Brad Sigmon, 67, in the first firing squad execution in the U.S. in 15 years. According to the Death Penalty Information Center, Sigmon’s death marks the fourth firing squad execution in U.