London, United Kingdom – Sulaiman and Kasim Khan have not heard their father’s voice in almost six months.

The last time they spoke to Imran Khan, the imprisoned former prime minister of Pakistan and cricket legend, was over Eid al-Fitr in March. The call lasted 20 minutes.

“We don’t know how much time we have to speak,” Kasim, 27, told Al Jazeera in London. “Usually it’s around the 20-minute mark. He frantically asks about our lives and gives us advice. But when we ask about him, he very quickly shuts it down. He doesn’t seem to want to talk too much about how he is.

“You know, it is what it is,” Kasim recalled him saying.

Three years have passed since Khan, 73, was imprisoned in Rawalpindi’s Adiala Jail. He has faced more than 100 legal cases since his 2022 ouster in a vote of no confidence, including charges of bribery, leaking state secrets and illegally selling state gifts. He denies all of the accusations against him.

All of his convictions but one have been suspended or overturned, with appeals pending.

Khan’s family and his Pakistan Tehreek-e-Insaf (PTI) party believe the charges are politically motivated.

Two of his sisters, Uzma and Noreen, were recently allowed to see him. They said it was the first visit they had had in months.

“They were both quite disturbed by how agitated he was. He’s been mentally tortured with this solitary confinement,” Sulaiman, 29, said.

“His heart rate spikes considerably in his cell. He’s having palpitations due to severe anxiety,” said Kasim. “He’s the most calm, mentally strong person I’ve ever known by a considerable margin. To hear he’s facing anxiety, it’s unfathomable.”

Khan’s lawyers reported in February that he had lost 85 percent of the vision in his right eye.

“He was still wearing an eye patch when he saw our aunt the other day,” Sulaiman said. “For 10 months he wasn’t allowed any visitors. Apart from that brief visit from his sisters, none of the other orders have been followed.”

Pakistan’s Ministry of Information and Broadcasting, in a statement sent to Al Jazeera, rejected the family’s allegations, that Khan has been denied appropriate medical care “or that the government failed to comply with the directions of the Honourable Supreme Court regarding his medical examination”.

“Health matters” should not be politicised, the statement continued, adding that the government “has never adopted a disrespectful attitude towards anyone’s health”.

On August 18, a three-judge Supreme Court bench ruled that Khan be moved to the private Shifa International Hospital within two days, that he be granted weekly family visits and twice-weekly calls with his sons, and ordered that his personal physician and sister, both doctors, be allowed to take part in his medical care. Earlier, a cardiac board review found Khan had fluctuating blood pressure and anxiety, attributed to limited contact with his family.

But he was instead taken to a government hospital, PIMS, for a brief check-up before returning to jail on August 20. Khan’s party has since filed a contempt petition.

“These government doctors are essentially told what to say,” said Sulaiman. “We want him independently checked, so we have proof. What are they hiding?”

“The establishment currently has absolute power. Any efforts by the Supreme Court seem ineffective,” said Kasim. “We’re just trying to make as much noise as possible.”

The Ministry of Information and Broadcasting said reports of Khan’s ill health were “not supported by prison or medical records”.

It said Khan has undergone 30 medical examinations since his imprisonment began “in addition to regular examinations by the prison doctor” and that doctors had recently concluded that he appears “oriented, stable and without any recorded acute or unmanaged deterioration”.

Support from the UN to cricketers

Support for Khan’s release has come from the United Nations, Amnesty International, politicians in Washington and London, and 21 former cricket captains.

“We’re hoping the UK could make a difference,” said Kasim. “Our father lived here a long time, and he’s always spoken very highly of England.”

Their mother, Khan’s ex-wife Jemima Goldsmith, has called on Prime Minister Andy Burnham and Foreign Secretary Ed Miliband for help, saying Khan has “endured three years of solitary confinement” in what has become a “human rights emergency”.

She said that their sons, who are British citizens, have been denied visas and warned they risked arrest if they travelled to see Khan, calling the situation “a human-rights emergency.”

Khan’s sons last met him in November 2022 after an attempted assassination on his life.

“We have plans, but we can’t disclose exactly what they are, because anything we say publicly is often very quickly intercepted by those in Pakistan,” Kasim said.

“Now is the toughest time, the bleakest it’s looked. But at least there’s more attention now,” Sulaiman added. “We’re lucky to have good friends and a strong family unit who keep us sane.”

The Pakistani ministry also denied claims that Khan has been isolated or denied contact, saying, “Records show approximately 198 interview sessions involving more than 900 visitor entries. These include his sisters, family members, lawyers, doctors, political representatives and other approved visitors.”

It described his prison conditions as humane, saying the facilities allow for “sleeping, sanitation and exercise”.

“He receives separately prepared meals, including meat, chicken, fruit, milk, nuts, juices and bottled water,” it said. “At the same time, access to a prisoner cannot be used as a platform for unrestricted political communication or political activity from inside prison.”

Khan had kept his sons out of the limelight and neither sought a life in front of the cameras.

Kasim said he holds the government responsible for their father’s deteriorating health.

“Where is the humanity in not allowing someone to receive basic health checks or treatment? It’s the pettiness, the petty torture techniques, not allowing him to have books, phone calls with his children, keeping him for 23 hours in an isolated cell,” he asks.

“If they reject any claims of mistreatment, prove it. Bring him to an unbiased doctor and hospital, and show the medical reports. It puts our minds at ease, and shows the people of Pakistan that their elected leader is healthy.”

But he continues to believe in his father’s strength.

“If there’s hope that anyone can remain resilient through this period, it’s him, even though it’s so brutal in these conditions,” said the younger brother.