Skeletal remains of at least five people have been found at the bottom of an Oklahoma lake which could help solve two decades-old mysteries.
The President is visiting Oklahoma today as survivors of a tornado, that killed 24 people, attempt to rebuild their homes.
The survivors of Monday's devastating tornado are pulling together to rebuild their homes.
The White House has said the botched execution of a death row prisoner in Oklahoma fell short of the humane standards that must apply to carrying out the death penalty.
The execution of Clayton Lockett was stopped when he regained consciousness after receiving a lethal injection, before dying from a heart attack around 30 minutes later.
ITV News Washington Correspondent Robert Moore reports.
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.
Oklahoma's governor has announced a new evaluation of the state's procedures for lethal injections following the botched execution of an inmate earlier.
I've postponed tonight's second execution and ordered an evaluation of Oklahoma's lethal dosage protocol.http://t.co/hqMhY3tX6J
The drugs used in the botched lethal injection of Clayton Lockett "weren't working as they were designed to", a prison spokesman has said.
Jerry Massie told reporters:
"We believe that a vein was blown and the drugs weren't working as they were designed to. The director ordered a halt to the execution."
Oklahoma inmate Clayton Lockett apparently called out during his execution, saying "something's wrong", an Associated Press reporter on the scene has said.
Lockett later died of a heart attack, but the execution of fellow inmate Charles Warner has been postponed for 14 days.
Prison director called the execution because Lockett was still moving. At 6:37 Lockett, still moving, said "somthing's wrong."
He was conscious and blinking, licking his lips even after the process began. He then began to seize.
Officials in the US state of Oklahoma have reportedly postponed the second of two executions set for today after the first lethal injection was botched.
The Associated Press said the execution of Clayton Lockett was stopped after he apparently regained consciousness.
Lockett then suffered a heart attack and died around half an hour after officials halted the execution.
Now the execution of Charles Warner, which had been due two hours after Lockett's, will be stayed for a fortnight.
Three storm chasers were among the nine people killed in the most recent tornadoes to strike Oklahoma, CNN reports.
Tim Samaras, 55, and his 24-year-old son Paul died along with 45-year-old Carl Young whilst chasing a tornado in El Reno, relatives said.
Writing on Facebook, Jim Samaras confirmed that the trio had been killed:
Thank you to everyone for the condolences. It truly is sad that we lost my great brother Tim and his great son, Paul.
The men who died made a living from researching and recording extreme weather.
A mother and baby were among nine people killed after a new series of tornadoes hit the US state of Oklahoma.
It struck during rush hour last night and damaged a large number of vehicles.
Around 50 people were injured, some critically.
ITV News reporter Nick Thatcher reports:
Emergency officials in Oklahoma are assessing the damage after a violent burst of thunderstorms and tornadoes swept across the Midwest overnight, killing at least nine people and injuring dozens more.