FILE - This photo provided by the Alabama Department of Corrections shows Michael Brandon Samra. His attorney has asked the governor to halt his Thursday, May 16, 2019 lethal injection while a Kentucky court weighs the appropriateness of the death penalty for people who were under 21 at the time of their crimes. Samra was 19 when he participated in the 1997 slayings in Shelby County of four people, including two children. (Alabama Department of Corrections via AP)

MONTGOMERY — The lawyer for an Alabama inmate set for lethal injection in a quadruple killing that occurred after a dispute over a pickup truck said he doesn’t plan last-minute appeals to block the execution set for Thursday night.

Steven Sears told The Associated Press in an email that he doesn’t anticipate filing additional litigation on behalf of Michael Brandon Samra.

Instead, Sears said he was awaiting Alabama Republican Gov. Kay Ivey’s response to a clemency request made last week.

Ivey’s press office did not immediately respond to an email seeking comment.

Samra, 41, is scheduled to receive a lethal injection at the state prison at Atmore.

Samra and a friend, Mark Duke, were convicted of capital murder in the deaths of Duke’s father, the father’s girlfriend and the woman’s two elementary-age daughters in 1997. The two adults were shot and the children had their throats slit.

Evidence showed Duke planned the killings because he was angry that his father wouldn’t let him use his pickup.

Duke and Samra were both originally convicted of capital murder and sentenced to death, but Duke’s sentence was overturned because he was 16 at the time of the killings and the Supreme Court later banned executing inmates younger than 18 at the time of their crimes.

Samra was 19 at the time and asked the U.S. Supreme Court to delay his execution while the Kentucky Supreme Court considers whether anyone younger than 21 at the time of a crime should be put to death, but the justices refused .

Gov. Ivey hasn’t acted on a request for a reprieve on the same grounds. The clemency request also said Duke was more to blame for the killings than Samra.

Court documents show Duke and Samra killed the four at a home in Pelham, a Birmingham suburb, on March 23, 1997. The day before, Mark Duke and his father, Randy Duke, got into a heated argument over the man’s refusal to let the son borrow his truck.

After enlisting friends to help, Mark Duke killed his father with a gunshot to the face and Samra shot the man’s girlfriend, Dedra Mims Hunt, who survived and fled to another part of the house.

Mark Duke found the woman in a bathroom and shot her, court documents show. Out of bullets, he then used a knife to slit the throat of the woman’s 6-year-old daughter, Chelisa Hunt. Samra cut the throat of the woman’s 7-year-old daughter, Chelsea Hunt, as she begged for mercy while Duke held the child down.

In a letter to the governor seeking mercy for the inmate, Samra’s lawyer said his client confessed to the slayings, expressed remorse and participated only at Mark Duke’s request.

Two other men who were teenage friends of Samra and Mark Duke at the time of the killings served prison sentences for lesser roles. David Layne Collums and Michael Lafayette Ellison, both now 39, were accused of helping plan and cover-up the killings.

Another execution is scheduled Thursday in Tennessee , that of 68-year-old Don Johnson, who was condemned to die for the 1984 suffocation of his wife.