The party was hosted by President Nursultan Nazarbayev at the luxury Royal Tulip Hotel in the nation's former capital and largest city Almaty, TMZ said.

Topping the bill at the event were US rapper Kanye West and pop diva Beyonce Knowles, TMZ reported. 

West received a reported $3 million for playing at the party on Saturday, TMZ claimed, citing unnamed local sources.

President Nazarbayev’s youngest grandson Aisultan, 23, a graduate of the British Army’s Royal Military Academy at Sandhurst, married Alima Boranbayeva, 20, who studies at the Courtauld Institute in London and is the daughter of the chairman of a major Kazakhstan gas company.

Russian gas giant Gazprom's CEO Alexei Miller, a colleague of the bride’s father, was among the wedding guests, reported.

Russian pop stars and celebrities also attended the party.

US celebrities have previously come under criticism from human rights campaigners for performing for Central Asian leaders.

Jennifer Lopez was slammed after she sang Happy Birthday to the president of Turkmenistan in July. Her publicist later claimed she would not have performed there if she had been aware of the country’s human rights record.

In 2011, British pop singer Sting cancelled a performance for President Nazarbayev citing human rights concerns following suppression of a demonstration by striking oil workers.

Fans go wild at Kairat Nurtas gig

Also in Almaty, investigators were on Monday probing how a glitzy concert at an upscale shopping centre by a wildly popular heartthrob Kazakh singer over the weekend led to riots that left dozens wounded.

More than 160 people were arrested after the disorder, which broke out late on Saturday night at the concert by pop singer Kairat Nurtas at the Prime Plaza shopping centre in Almaty, the local city hall said in a statement.

Investigators said they had launched criminal probes into possible hooliganism and also neglect of duties by the organisers of the event.

Local media reports said that the disorder broke out when Nurtas ended his concert prematurely after fans broke through a police cordon to get closer to him on the stage.

They then jumped onto the stage and started throwing stones and bottles in apparent frustration, the reports said.

Some 90 people were injured in the scuffles that followed the concert and nine of them were hospitalised, a spokesperson for the regional health authority said.

The shopping centre had organised the appearance of Nurtas, who has a huge following in Kazakhstan for his sentimental love ballads, to mark the end of a long-running karaoke competition.

Authorities blame the singer

They blamed the disturbances squarely on the singer himself, accusing him of letting down his fans by only singing his way through one song.

"He took the decision to leave the stage after clearly getting scared of his own fans. This aroused dissatisfaction among the audience and led to the mass riots."

"If Kairat Nurtas had been professional and had continued the concert then everything would have been fine," it added.

The singer is due to give a news conference himself later in Almaty to give his position.

The rioting was among some of the worst disturbances seen in the former Kazakh capital city in the last years.

Ruled by Nazarbayev since before the fall of the USSR, Kazakhstan enjoys a reputation as the most stable state in Central Asia.

Kazakhstan has enjoyed spectacular economic growth in the last decade on the back of its vast natural resources wealth and trade with neighboring China.

(Voice of Russia, RIA-Novosti, AFP)