Oklahoma ? A convicted killer was put to death Tuesday for the execution-style slayings of four workers at a Tulsa restaurant 14 years ago.

Corey Duane Hamilton, 38, was pronounced dead at 6:14 p.m. at the Oklahoma State Penitentiary in McAlester. The U.S. Supreme Court denied his final appeals Monday.

“I wish everyone could experience the love of God to the degree I have experienced,” Hamilton said while strapped to a gurney, intravenous tubes attached to his arms. “I love everybody, and I hope to see you on the other side.”

The drugs began to flow at 6:08 p.m., and Hamilton appeared to stop breathing around 6:10 p.m.

He received four death sentences after he and three others were convicted of killing Joseph Gooch, 17; Theodore Kindley, 19; Senaida Lara, 27; and Steven Williams, 24.

The robbers took $2,200 and forced the victims into a walk-in refrigerator at Lee’s Famous Recipe Chicken Restaurant on Aug. 17, 1992. They were each shot once in the back of the head.