MICHIGAN CITY, Ind. — A man in Indiana, found guilty of killing a police officer back in 2000, is scheduled to be executed by lethal injection early Tuesday, marking the state’s second execution in the last 15 years.

Benjamin Ritchie, now 45, has been on death row for over two decades following his conviction for the deadly shooting of Beech Grove Police Officer Bill Toney during a pursuit on foot.

If there is no intervention from the courts at the eleventh hour, Ritchie’s execution will take place “before the hour of sunrise” at Indiana State Prison in Michigan City, as per state officials.

Indiana resumed executions in December after a year-long hiatus due to the scarcity of lethal injection drugs nationwide. Prison officials provided photos of the execution chamber in advance of Joseph Corcoran’s execution, showing a space that looks like a sparse operating room with a gurney, fluorescent lighting, a floor drain, and an adjacent viewing room. They have offered few other details about the process, including the time at which the executions take place.

Among 27 states with death penalty laws, Indiana is one of two that bars media witnesses. The other, Wyoming, has conducted one execution in the last half-century. The Associated Press and other media organizations have filed a federal lawsuit in Indiana seeking media access.

The execution on Tuesday in Indiana is among 12 scheduled in eight states this year. Ritchie’s execution and two others in Texas and Tennessee will be carried out this week.

The 2000 fatal shooting of a police officer

Ritchie was 20 when he and others stole a van in Beech Grove, near Indianapolis. He then fired four shots at Toney during a foot chase, killing him.

At the time Ritchie was on probation from a 1998 burglary conviction.

Toney, 31, had worked at the Beech Grove Police Department for two years. He was the first officer of the police department of roughly 30 officers to be killed by gunfire in the line of duty. The community of 14,000 people mourned the married father of two as a neighborly person who showed up to help others.

When Toney died, “Everyone of us involved, including Bill, had something stolen from them that they’ll never get back,” said Deputy Police Chief Tom Hurrle, who worked with him.

Relatives spoke at a clemency hearing last week, urging for the execution to move forward.

“It’s time. We’re all tired,” said Dee Dee Horen, who was Toney’s wife. “It is time for this chapter of my story, our story, to be closed. It’s time for us to remember Bill, to remember Bill’s life, and not his death.”

Appealing a death sentence

Ritchie’s attorneys have fought the death penalty sentence, arguing his legal counsel at trial was ineffective because his lawyers failed to fully investigate and present evidence on his fetal alcohol spectrum disorders and childhood lead exposure.

Current defense attorneys say Ritchie suffered “severe brain damage” because his mother abused alcohol and drugs during pregnancy and has struggled with decision-making. He was also diagnosed with bipolar disorder in 2005.

“He’s finally come to have some coping skills. He’s a different man,” said defense attorney Steven Schutte.

Republican Gov. Mike Braun rejected Ritchie’s clemency bid last week as the parole board recommended. Braun didn’t explain his decision, but board members said Ritchie’s case didn’t meet the bar for commuting a sentence and cited a dozen violations during Ritchie’s time in prison, including threatening others with violence.

The Indiana Supreme Court denied a request to stop the execution, but two justices noted the jury didn’t get accurate information about Ritchie’s brain damage.

Ritchie’s attorneys are challenging that decision in federal court and have also filed a petition with the U.S. Supreme Court.

Disability rights advocates say Ritchie’s brain damage should exclude him from the death penalty.

Ritchie’s “capacity to fully appreciate the wrongfulness of his conduct” was “impaired at the time of his crime,” Dr. Megan Carter, who also testified before the parole board, said in a statement.

Expressing regret and awaiting execution

Attorneys say Ritchie has changed during his more than two decades behind bars and shown remorse.

In court as a young man, Ritchie smiled at Horen and laughed as the verdict was read.

He told a parole board he deeply regrets his actions, especially how he acted with Toney’s widow.

“I wish I could go back to the day in court, because that man’s wife deserved to say everything she needed to say to me, and that punk kid should have just kept his mouth shut and let her say whatever she needed to say,” Ritchie said. “That was her right. That was his family’s right.”

Ritchie has spent his last days getting visits from friends and family. Under state law, he’s allowed up to five witnesses at his execution, which will include attorneys and friends.

“I’ve ruined my life and other people’s lives, and I’m so sorry for that night,” he told the parole board earlier this month. “You can’t take back what you did.”