(CNN) -- A court in Fulton County, Georgia, has temporarily stopped the scheduled Monday night execution of condemned murderer Warren Hill. 

Hill was sentenced to death for the 1990 killing of Joseph Handspike, another inmate in a Georgia state prison. 

He was convicted of beating Handspike to death with a nail-studded board while serving a life sentence in the 1985 killing of his girlfriend, Myra Wright. His lawyers have argued that Hill is mentally retarded. 

Last minute stay of execution granted in February 

"Today, the Court found that more time is needed to explore Mr. Hill's complaint, which raises serious concerns about the extreme secrecy surrounding the execution process in Georgia, and the new Lethal Injection Secrecy Act, which took effect one day before Georgia issued a death warrant for Mr. Hill," Brian Kammer, Hill's attorney said in a statement. 

Monday is not the first time Hill's execution has been halted. 

He had previously been scheduled to die last July, but the state Supreme Court stopped the execution on procedural grounds. Hill was granted another stay in February. 

According to Kammer, a briefing on Hill's complaint will take place Thursday. A new execution date is expected to be set for the same day, he said. 

"Ultimately, we are hopeful that the United States Supreme Court will hear Mr. Hill's pending Petition for Writ of Habeas Corpus, and will have the opportunity to consider the important new evidence in this case, that there is unanimous consensus among all the doctors who have examined Mr. Hill, including three who previously testified for the state, that he is a person with mental retardation, and thus ineligible for the death penalty," said Kammer. 
What was supposed to happen on Monday night?
Why was he scheduled to be killed?
Who did he kill?
Who was that?
Where?
Why was he incarcerated?
How did he kill the other prisoner?
Was there a weapon involved?
What was it?
Was there something wrong with this man?
What?
Can a man with that issue be executed?
Has his punishment been put off before?
Who is trying to help this man?
What concern is being raised about the new law put out around this time?
When was his first day of punishment?
What stood in the way of it being carried out?
When did the postponement end?
What is this man's representitive hopeing to accomplish?
execution
A court in Fulton County, Georgia, has temporarily stopped the scheduled Monday night execution of condemned murderer Warren Hill. 
killing someone
Hill was sentenced to death for the 1990 killing of Joseph Handspike
Joseph Handspike
Hill was sentenced to death for the 1990 killing of Joseph Handspike
another inmate
another inmate in a Georgia state prison. 
Georgia state prison.
Hill was sentenced to death for the 1990 killing of Joseph Handspike, another inmate in a Georgia state prison. 
killing his girlfriend
He was convicted of beating Handspike to death with a nail-studded board while serving a life sentence in the 1985 killing of his girlfriend,
beating to death
He was convicted of beating Handspike to death with a nail-studded board 
Yes
nail-studded board
a nail-studded board
a nail-studded board
Yes
His lawyers have argued that Hill is mentally retarded. 
mental retardation
Mr. Hill, including three who previously testified for the state, that he is a person with mental retardation, and thus ineligible for the death penalty," said Kammer. 
No
Mr. Hill, including three who previously testified for the state, that he is a person with mental retardation, and thus ineligible for the death penalty," said Kammer. 
Yes
Monday is not the first time Hill's execution has been halted. 
Brian Kammer
Brian Kammer, Hill's attorney
secrecy
which raises serious concerns about the extreme secrecy surrounding the execution process in Georgia, and the new Lethal Injection Secrecy Act,
July
He had previously been scheduled to die last July
state Supreme Court
but the state Supreme Court stopped the execution on procedural grounds.
Monday night
(CNN) -- A court in Fulton County, Georgia, has temporarily stopped the scheduled Monday night execution of condemned murderer Warren Hill. 
consider the important new evidence in this case
"Ultimately, we are hopeful that the United States Supreme Court will hear Mr. Hill's pending Petition for Writ of Habeas Corpus, and will have the opportunity to consider the important new evidence in this case