The father and former trainer of Russian Mixed Martial Arts star Khabib Nurmagomedov has died at 57 after contracting coronavirus.
Abdulmanap Nurmagomedov was first hospitalised in April in his native North Caucasus region of Dagestan and was later transferred to a Moscow clinic.
His 31-year-old UFC lightweight champion son in May urged people in Dagestan, one of the regions hardest hit by the pandemic, to be "disciplined" and "listen to our doctors."
This week he posted a picture of his tracksuited father at a training session on Instagram with the caption 'Father' as followers said they were praying for his recovery.
A week ago the fighter gave an interview to Russian television, saying that his father no longer had the virus but was still in intensive care with damage to his kidneys and heart. He said he was visiting daily although his father was not able to speak to him.
The fighter was due to give a press conference on Saturday that has now been cancelled.
Abdulmanap Nurmagomedov trained numerous champions in judo and the Russian martial arts discipline sambo.
He began teaching his son fighting moves from the age of three.
Conor McGregor, who lost to the unbeaten Khabib at UFC 229 in 2018, put previous animosity to one side to pay his respects to his former adversary's father.
The loss of a father, a coach, and a dedicated supporter of the sport. Condolences and rest in peace Abdulmanap Nurmagomedov.— Conor McGregor (@TheNotoriousMMA) July 3, 2020
John Kavanagh, who served as coach to the now-retired McGregor, also took to Twitter to offer his condolences, and described the late trainer as "a genius of combat sports and absolute inspiration to so many up and coming fighters".