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.

An inmate on South Carolina's death row has chosen to die on March 7 by firing squad, his lawyer said Friday. Brad Sigmon, 67, who was convicted in 2002 of killing his ex-girlfriend’s parents, would be the first condemned prisoner to be executed by that method in South Carolina and the first inmate to die by firing squad in the U.

Associated Press reporter Jeffrey Collins explains the process in which condemned South Carolina inmate Brad Sigmon will be executed after electing to die by a firing squad.

Death row inmate Brad Sigmon has chosen to die by firing squad after being convicted for the deaths of his ex-girlfriend's parents.