American murderer Christa Pike has been released from hospital 10 days after a failed execution attempt

Lawyers for Christa Pike, a US death row inmate, have been released from hospital following a failed execution attempt late last month.

Pike, 50, has been returned to the prison where she has spent the past 30 years, where she continues to receive medical care, according to a statement issued by her lawyers on Saturday.

Pike survived two fatal doses of pentobarbital on September 30, which left her in critical condition.

Pike regained consciousness earlier this week and began speaking, something that surprised experts, medical staff and her lawyers alike.

Her case is now entering an unprecedented phase, as she is believed to be the only person to have survived an attempted execution by lethal injection.

Pike's lawyers stated in their statement that she was "grateful to the first responders and medical team for the care they provided her under these exceptional circumstances."

It is not yet clear what type of medical care Baek is receiving now that she has returned to prison, but her lawyers have previously stated that she faces a "long road to recovery."

The Tennessee Department of Corrections has not yet announced why the execution did not go as planned, although it has defended the method it used.

At a court hearing on Wednesday, Tennessee Assistant Attorney General Will Ayers told the judge he did not know if the state intended to try to execute her again.

The judge ordered the state to preserve all evidence related to the failed injection; This evidence may pave the way for a future lawsuit against the state.

Pike was 18 when she and her then-boyfriend, Tadaryl Shipp, beat, tortured and killed Colleen Slemmer, 19, whom they had met at a vocational training camp for low-income youth.

Shipp was spared the death penalty because he was not of legal age at the time of the crime, and he remains in prison.

Pike is the first woman scheduled to be executed in Tennessee in more than 200 years, and her lawyers have spent decades pursuing an appeal of her case.

In the days before her scheduled execution, both the U.S. Supreme Court and Tennessee Governor Bill Lee refused to halt the execution.

Following the failure of the operation, Pike's lawyers renewed their demands to reduce her sentence to life imprisonment without the possibility of parole.

Baek lost consciousness and was taken to a local hospital following the failed execution attempt; Her legal team believed for days that she was suffering from brain death, and they expected her to be taken off life support at any moment.

Pike eventually regained consciousness and began speaking again on Tuesday; Her lawyer, Randy Spivey, said her first words were: "Where am I?" and “Who are you?”