Protesters also attacked the General Election Commission offices on Tuesday night, demanding that officials resign over the alleged voting irregularities.
Mongolia is struggling to modernize its nomadic, agriculture-based economy.
The government says per capita income is US$1,500 a year in the country of about 3 million people spread across an area about three times the size of Spain.
The two main political parties focused their campaigns on how to tap recently discovered mineral deposits — including copper, gold and coal — but disagreed over whether the government or private sector should hold a majority stake.
Mongolia has also been trying to have a more significant role in international politics.
In 2006, it hosted its first multinational peacekeeping training exercises. It also has sent troops to Iraq and Afghanistan to help shore up the US presence in those countries.
The moves are part of its burgeoning friendship with the US, in marked contrast with the cautious attitudes toward Washington of others in the region, notably in Beijing and Moscow.
In 2005, US President George W. Bush made the first visit to the country by a serving US president.
Meanwhile, in Taiwan, Ministry of Foreign Affairs spokesman Henry Chen (陳銘政) said yesterday that no Taiwanese had been harmed during the ongoing unrest in Mongolia.
ADDITIONAL REPORTING BY JENNY W. HSU
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