"The Prime Minister observed that it was indeed a happy moment for all of us that after giving joy and happiness to the people of Islamabad and Pakistan for about 35 years, Kaavan will now be able to retire with other elephants in a specialized sanctuary in Cambodia", Khan's office tweeted.
Cher already met with Prime Minister of Pakistan Imran Khan on Friday and is said to be meeting with Kavaan himself later in the day.
The story of Kaavan, who is 35 years old, attracted world attention after reports went viral about the deteriorating condition of the zoo in Islamabad where the elephant was kept. Campaigners say the heartbreaking image of Kaavan standing above the dead body of his partner shocked the world.
Pop goddess Cher met with the prime minister of Pakistan, Imran Khan, on Friday, to help save Kaavan - known as "the world's loneliest elephant".
Thanks to activists, including Cher, Kavaan, who lost his partner in 2012, is now being moved from captivity to the Cambodia Wildlife Sanctuary, where he will find companionship and better living conditions.
Cher shared her delight in the news that a lonely elephant in Pakistan is being freed. Kaavan is to be flown out of Islamabad on Sunday to a sanctuary in Cambodia.
According to a notification, issued by the authority on Friday, a cargo airplane to transport the airplane has been granted permission to land at the Islamabad International Airport. Animal rights activists campaigned for its release and their efforts got a boost with the Islamabad High Court's decision on May 21, ordering immediate relocation of all animals of the zoo, including Kaavan to some suitable wildlife sanctuaries. A veterinarian with Four Paws told The Associated Press that Kaavan was heartbroken when she died.
Four Paws International, a global animal welfare group which often carries out animal rescue missions, has provided the medical treatment needed before Kaavan can travel.
Earlier this year Pakistan's high court ordered the closure of Marghazar Zoo in the capital of Islamabad - where Kaavan has lived for much of his life - due to its bad living conditions.
Even after he's in Cambodia, Kaavan will require years of physical and even psychological assistance, Bauer said. His mental health has been on a downward spiral ever since, with experts noting that he has taken to shaking his head back and forth for hours at a time - actions they believe may be due to extreme boredom.
For the past three months, a Four Paws team including veterinarian Khalil and the Islamabad Wildlife Management Board have been readying Kaavan to leave.
Kaavan has battled loneliness as well as poor living conditions.
Kaavan was put on a diet of fruit and vegetables and as a result has lost half a ton (450 kilograms), he said.
The veterinarian said this was the first time in 30 years that he developed a strong emotional bond with a rescue animal.
Dr Amir Khalil and German expert Frank Gortz, who came from Austria to transfer Kaavan, told the court that after the elephant, two brown bears at the zoo will be transferred to Jordan on December 6.
Dr Khalil said: 'I was always moving, so never allowed myself to develop an emotional attachment.' But with Kaavan he couldn't resist.