Aisultan Nazarbayev, the grandson of Kazakhstan’s first President Nursultan Nazarbayev and son of former Senate Speaker Dariga Nazarbayev, died at the age of 30 in London.

Axar.az reports citing Russian media.

"This night Aisultan Nazarbayev died in London. The cause of his death is being verified. According to preliminary data, this is cardiac arrest. Other details are unknown. Aisultan Rakhatovich was [nearly] 30 years," the statement said.

Aisultan is the son of Nazarbayev’s elder daughter Dariga, who served as speaker of Kazakhstan’s upper house until early May. His father Rakhat Aliyev, who had held several posts in the government, moved to Austria and was granted political asylum. Later he was arrested upon Kazakhstan’s request and was imprisoned and died in his cell in 2015.