Oklahoma prepared to execute a man Thursday whose transfer to state custody was expedited by the Trump administration.

John Fitzgerald Hanson, 61, is set to receive a lethal injection at the Oklahoma State Penitentiary in McAlester. Hanson was sentenced to die after he was convicted of carjacking, kidnapping and killing a Tulsa woman in 1999.

Hanson, whose name in some federal court records is George John Hanson, had been serving a life sentence in federal prison in Louisiana for several unrelated federal convictions. Federal officials transferred him to Oklahoma custody in March to follow through on President Donald Trump’s sweeping executive order to more actively support the death penalty.

Hanson’s attorneys argued in a last-minute appeal that he did not receive a fair clemency hearing last month, claiming that one of the board members who denied him clemency was biased because he worked for the Tulsa County District Attorney’s Office when Hanson was prosecuted. A district court judge this week temporary halted the execution, but an appeals court later cleared the way for it.

The U.S. Supreme Court late Wednesday rejected a separate appeal that alleged a key witness testified against Hanson in exchange for favorable treatment from prosecutors in a criminal case, information that was never disclosed to his defense team.

Prosecutors allege Hanson and accomplice, Victor Miller, kidnapped Mary Bowles from a Tulsa shopping mall. Prosecutors allege the pair drove Bowles to a gravel pit near Owasso, where Miller shot and killed property owner Jerald Thurman. The two then drove Bowles a short distance away, where Hanson shot and killed Bowles, according to prosecutors. Miller received a no-parole life prison sentence for his role in the crimes.

During last month’s clemency hearing, Hanson expressed remorse for his involvement in the crimes and apologized to the victims’ families.

“I’m not an evil person,” Hanson said via a video link from the prison. “I was caught in a situation I couldn’t control. I can’t change the past, but I would if I could.”

Hanson’s attorneys acknowledged he participated in the kidnapping and carjacking, but said there was no definitive evidence that he shot and killed Bowles. They painted Hanson as a troubled youth with autism and who was controlled and manipulated by the domineering Miller.

—AP