THE sister of death row inmate Julius Jones and a group of spiritual leaders were unable to meet with Oklahoma Gov Kevin Stitt on Tuesday as they called for a stay in his execution.

...I am here on behalf of my family. I feel like if he (Stitt) can meet with the Howell family, then he can definitely meet with the Jones family,... Antoinette Jones said, referring to reports that the gov had met with victim Paul Howell's family members, according to The Oklahoman.

Meanwhile, over six million people have signed a petition to spare the life of Jones, who is scheduled to be executed on Thursday for the murder of Howell.

Jones was a 19-year-old student at the University of Oklahoma when he was considered the prime suspect in the killing of the 45-year-old businessman.

In 2002, he was convicted of first-degree murder and sentenced to death at just 22 years old. He has spent decades proclaiming his innocence.

Governor Stitt informed news outlets that he will meet with all involved parties and then make his decision on whether the execution of Jones will proceed as planned.

Read our Julius Jones live blog for the latest news and updates...