A concert marking Uzbekistan's 25th anniversary of independence from the Soviet Union has been cancelled amid uncertainty about the health of the country's president, news agencies have reported.
The government announced on Sunday that Islam Karimov, the 78-year-old hardliner who has ruled since independence, had been taken to hospital, but gave no further details.
His daughter said later on social media that he had suffered a brain haemorrhage.
No government statements on his health have been issued on Tuesday, a day after unconfirmed reports of his death circulated.
Russia's Interfax news agency cited an unnamed organiser of the independence day event as saying a concert planned for Wednesday in the capital Tashkent had been cancelled.
The state news agency RIA Novosti cited a diplomatic source as saying Uzbekistan had informed Russia of the cancellation.