A man on death row for a high profile triple murder case in Etowah County is asking an appellate court to stop his upcoming lethal injection. Robert Melson’s attorneys say the injection has failed to work properly in four states. An Alabama inmate in December coughed for 13 minutes and appeared to move slightly after consciousness tests. Appellate courts earlier this month refused to stop the execution of death row inmate Tommy Arthur who also questioned the injection. Melson is scheduled to be executed on June 8th for the murders of three Gadsden restaurant employees during a 1995 robbery.