The drugs used in a botched lethal injection in Oklahoma were the subject of an appeal from lawyers representing two death row inmates.
The execution of Clayton Lockett was stopped after the drugs he was administered "weren't working as designed", prison officials said.
Lawyers for Lockett and fellow inmate Charles Warner had argued before the botched execution that the use of an untested cocktail of drugs could subject their clients to "cruel and unusual punishment", which is prohibited by the US constitution.
More top news
Bob and Mike Bryan said they were withdrawing from the Games over concerns for their families health.
The former boss of BHS said a parliamentary committee that investigated the closure of the stores was a 'kangaroo court'.
Those going out tonight might need an extra layer as it will be noticeably chilly.