More than 90 percent of Kyrgyz voters approved a new constitution in Sunday's referendum, official results showed Friday. The Central Election Commission said 90.55 percent of the voters voted for the new constitution and 8.07 percent voted against, with 1.38 percent of votes being invalid. 'This means the constitution has come into force. Moreover, Roza Otunbayeva is confirmed as president of Kyrgyzstan,' said Central Election Commission head Alkybek Sariyev. A total of 2.72 million registered voters cast their ballots, which meant a turnout of 72.24 percent, Sariyev told reporters. Kyrgyzstan went ahead with a constitutional referendum last Sunday to create a parliamentary democracy and give legitimacy to the interim government that took power after former President Kurmanbek Bakiyev was ousted in April. The referendum asked Kyrgyz voters two bundled questions: Do they support a new constitution that diminishes presidential powers and strengthens parliamentary authority? Do they agree to endorse provisional leader Roza Otunbayeva as acting president for 18 months? The essence of the new constitution is to transfer the country from a presidential system to a parliamentary democracy. The interim government headed by Otunbayeva has whipped up an unprecedented campaign to popularize the referendum and has mobilized police and military forces across the country to secure a peaceful vote. Otunbayeva will be sworn in as the country's president on Saturday, the interim government announced earlier. 