Texas’ oldest death row inmate was executed Thursday for killing a Houston police officer during a traffic stop nearly 32 years ago.

Carl Wayne Buntion, 78, was executed at the state penitentiary in Huntsville. He was condemned for the June 1990 fatal shooting of Houston police officer James Irby, a nearly 20-year member of the force.

The U.S. Supreme Court had declined a request by Buntion’s attorneys to stop his execution.

“I wanted the Irby family to know one thing: I do have remorse for what I did,” Buntion said while strapped to the Texas death chamber gurney. “I pray to God that they get the closure for me killing their father and Ms. Irby’s husband.

“I hope to see you in heaven some day and when you show up I will give you a big hug.”

Buntion, joined by his spiritual adviser, began praying Psalm 23, “The Lord is my Shepherd...” as the lethal dose of the powerful sedative pentobarbital began. He took a deep breath, coughed once, then took three less pronounced breaths before all movement stopped.