Vietnam veteran Richard Gerald Jordan is set to be executed in Mississippi nearly 50 years after being sentenced to death.

The longest-serving death row inmate in Mississippi's history, Richard Jordan, was executed Wednesday evening at the Mississippi State Penitentiary in Parchman.

If the execution is not halted, prayerful protest vigils will start Wednesday at 4:45 p.m. in front of the Governor's Mansion and at 5 p.m. at the Mississippi State Penitentiary also known as Parchman Farm, according to a press release shared by Death Penalty Action to the Clarion Ledger.