Police are at a protest outside the hospital where terminally-ill Liverpool boy Alfie Evans is being cared for.
It comes a day after a High Court judge expressed his sympathy for the parents of the 23-month-old who is approaching death after being at the centre of a life-support treatment battle.
Merseyside Police said they were in attendance at a protest outside Alder Hey Children's Hospital and appealed to protesters to be respectful.
The force said on Twitter: "We can confirm that officers are at @AlderHey to monitor a peaceful protest tonight, Thursday 12 April.
"Please note that access to the hospital is currently being disrupted and protesters are asked to be respectful of other patients and visitors trying to access the location."
On Wednesday, Mr Justice Hayden described what had happened to Alfie as "profoundly unfair" as he endorsed an end-of-life care plan drawn up by specialists.
Alfie's parents Tom Evans and Kate James, who are both in their 20s and from Liverpool, have lost treatment fights in the High Court, Court of Appeal, Supreme Court and European Court of Human Rights.
In February, Mr Justice Hayden ruled that doctors at Alder Hey Children's Hospital in Liverpool could stop treating Alfie against the wishes of his parents following hearings in the Family Division of the High Court in London and Liverpool.
On Wednesday, during a follow-up hearing in London, he endorsed a plan put forward by Alder Hey doctors for withdrawing life support treatment.
The judge said detail of that plan could not be revealed because Alfie was entitled to privacy at the end of his life.