°®Âþµº

The family of jailed Egyptian-British activist , who is refusing food and water, demanded information on his health on Wednesday amid what they said were "rumours of force-feeding".

International concern has mounted since , 40, who is imprisoned in Egypt, escalated his months-long hunger strike by also declining liquids since Sunday, the start of the UN climate summit hosted by Egypt in Sharm El-Sheikh.

His UK-born mother Laila Soueif has made daily trips this week to the Wadi Al-Natroun prison, about 60 miles (100 kilometres) north of Cairo, but has received no update or proof of life.

The activist's sister Mona Seif said in a tweet their mother was back at the prison on Wednesday, where "they wouldn't take mama's letter to Alaa".

"Does that mean he is in a state where he can't receive a letter? Or is he not in this prison anymore?" Seif said.

"This uncertainty can only be settled if the Egyptian authorities gave us answers!"

A key figure of the 2011 uprising that toppled longtime autocrat Hosni Mubarak, Abdel Fattah gained British citizenship this year.

The dissident's aunt, novelist Ahdaf Soueif, tweeted that "we cannot explain two days without letters", and said that the family was concerned about "rumours of force-feeding and of sleep-inducing drugs".

She demanded he be moved to the Qasr Al-Aini University Hospital, Cairo's largest state medical facility, and given access to lawyers and British embassy officials.

Abdel Fattah, a veteran pro-democracy and rights campaigner, is serving a five-year prison sentence for "spreading false news" by sharing a Facebook post about police brutality.

British Prime Minister Rishi Sunak, French President Emmanuel Macron and German Chancellor Olaf Scholz have all voiced concern and called for his release.

United Nations rights chief Volker Türk has warned Abdel Fattah's "life is in great danger".

'Urgent' concern

Upon his return from the global climate summit, Sunak told the British parliament on Wednesday that his "deep concern… grows more urgent by the day".

"We will continue to press the Egyptian government to resolve the situation," he added.

"We want to see Alaa freed and reunited with his family as soon as possible."

Rights group Amnesty International on Wednesday said that British authorities "must obtain proof of life and help secure his release", warning that "Egypt's authorities are responsible for his life".

The only update in recent days has come from Egypt's Foreign Minister Sameh Shoukry, the COP27 president.

For the past three weeks, we've been working with & for a short documentary film about the fight to save their brother, British-Egyptian activist and blogger Alaa Abdel Fattah, who is on hunger strike in prison in Egypt. 🇪🇬🇬🇧

— °®Âþµº (@The_NewArab)

Shoukry told media at the summit that Abdel Fattah – whose dual citizenship Cairo does not recognise – has access to "all the necessary care in prison".

Macron said after meeting Egyptian President Abdel Fattah Al-Sisi on Monday that he had received an assurance that Cairo is "committed to ensuring" health "is preserved", and that the situation will be resolved "in the coming weeks and months".

But Ahdaf Soueif, the activist's aunt, said that "the prison hospital is probably not equipped to care for the rare case of a patient who has been living for six months on 100 calories a day" in his hunger strike.

Activists at COP27 have posted widely on Twitter under the hashtag #FreeAlaa, and several speakers have ended with the words "you have not yet been defeated" – the title of the jailed activist's book.

Human rights groups estimate that some 60,000 political prisoners are held in Egypt, many of them in brutal conditions and overcrowded cells, accusations which Cairo rejects.