COLUMBIA, S.C. (AP) — A South Carolina man who is scheduled to die next week by firing squad is again asking that his execution be postponed and prison officials release more information about the state’s lethal injection drug and procedures.

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 Sigmon, set for execution by firing squad on March 7, seeks a delay, citing concerns over South Carolina’s lethal injection process. If carried out, it would be the first U.S. firing squad execution since 2010.

The state has never used that method to execute a prisoner. The last time an inmate was killed by a firing squad was in 2010 in Utah.

A South Carolina man who is scheduled to die next week by firing squad is again asking that his execution be postponed and prison officials release more information about the state’s lethal injection drug and procedures.

Brad Sigmon chose bullets over lethal injection or the electric chair, "which would burn and cook him alive," his attorney said.

Chris LefkowA South Carolina man convicted of murdering his ex-girlfriend's parents has chosen to be put to death by firing squad next month in what would be the first such execution in the United States since 2010.