Independent photographer Umida Akhmedova was fined USD 872, while her son Temur Karpov was handed a USD 1,308 fine at yesterday hearing, Akhmedova said today.
"Two other activists faced similar fines, while three men, one of them a Ukranian citizen, were convicted to 15 days of arrest," Akhmedova told AFP.
The Hamza district court in the capital Tashkent found the activists guilty of holding unsanctioned rallies, she said.
Akhmedova, her son and the five other activists briefly gathered in public places in Tashkent on Monday.
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The activists, some of whom are ethnic Ukrainians, also submitted a petition in support of Ukraine's pro-European protests to the country's embassy in Tashkent after holding a brief protest outside the building.
In 2010, photographer Akhmedova was convicted of slandering Uzbekistan with a book of her gritty photographs of rural life and a documentary film about women's rights, both funded by the Swiss embassy. The court then amnestied her immediately.
Ukraine has seen two months of protests against President Viktor Yanukovych's rejection of a pact with the European Union escalate into deadly violence.