A federal appeals court in New Orleans late Tuesday blocked the execution of Robert Campbell, who was condemned for the 1991 kidnapping, rape, and murder of a 20 year old woman he kidnapped from a Houston gas station, 1200 WOAI news reports.

The court ruled that Campbell has an IQ of 68, meaning ht is considered mentally disabled and ineligible to be executed under a 2003 US Supreme Court ruling.

"Th Fifth Circuit's decision today creates an opportunity for Texas to rise above its past mistakes and seek a resolution of this matter that will better serve the interests of all parties and the public," defense attorney Robert Owen told 1200 WOAI news.

Civil liberties groups had expressed concern that Texas does not reveal the source if the Pentobarbital it uses to carry out lethal injection executions.. Campbell was to become the first convict executed since the bungled execution in Oklahoma last week.