Over 10,000 people have gathered on the square in front of the local administration office, reports the web site Fergana.ru.
"Approximately 10,000 people have gathered here and residents of Andizhan keep arriving," the agency said.
A rostrum with a microphone was installed on the square to let everyone address people.
Some protesters demand to dismiss President Islam Karimov and the Uzbek government. However, the majority of people talk about the hard economic situation, unemployment and the lack of foodstuffs, the agency said.
The Uzbek leadership does not intend to impose the state of emergency in Andizhan because of the disorders, a representative of Islam Karimov's press service told RIA Novosti.
The choice of the city of Helsinki is not incidental as the capital of Finland had hosted US-Soviet negotiations on the limitation of nuclear stockpiles in 1969