France's highest court has given a final ruling that doctors can stop feeding a man who has been in a persistent vegetative state since a road accident nearly 11 years ago, reports the BBC.
The Court of Cassation overturned an appeal court ruling issued on 20 May.
The case of quadriplegic Vincent Lambert, 42, has been at the centre of the right-to-die debate in France.
Lawyers for his parents threatened on Friday to press murder charges if his life support was halted, AFP reports.
They have long battled to keep him alive, but the case has divided their family as well as the nation. Mr Lambert's wife, six of his siblings and a nephew have argued that the humane course was to let him die.
The European Court of Human Rights ruled against the parents in 2015 but doctors did not immediately fulfil the plan to turn off his life support until last month, because of security concerns.
On 20 May doctors at the Sebastopol Hospital in the northern city of Reims began removing his feeding tubes.
Within hours the Paris Court of Appeal dramatically ordered them to resume hydration and nutrition and the case was referred to the Court of Cassation.