Computer users who logged on in Beijing, Shanghai and Guangzhou received a message that the site was not available when they tried to connect on Friday morning, the paper said. Some users were cut of as early as Thursday evening, it said.

The website remained inaccessible from Beijing on Saturday.

A spokesman for the Foreign Ministry said they do not deal with websites. The Ministry of Industry and Information Technology, which regulates the Internet, could not be reached for comment.

Earlier this week, Foreign Ministry spokesman Liu Jianchao defended China's right to censor websites that have material deemed illegal by the government, saying that other countries regulate their Internet usage too.

During the Summer Games held in August, China allowed access to long-barred websites such as the British Broadcasting Corp. and Human Rights Watch after an outcry from foreign reporters who complained that Beijing was failing to live up to its pledges of greater media freedom.

The New York Times said Beijing had blocked the Chinese-language website of the BBC, and websites of Voice of America, Asiaweek, and Ming Pao, a Hong Kong newspaper, earlier in the week. But apart from Ming Pao the sites were all accessible on Friday, it said.

Ming Pao's online site was still inaccessible on Saturday in Beijing, but the others were accessible.

China has the most online users in the world with more than 250 million, but it has also put in place a sophisticated system to police Web sites for sensitive material and routinely blocks Web sites that are pro-Tibetan independence or the Dalai Lama.

A spokeswoman for The Times, Catherine J. Mathis, told the paper that there did not appear to be a technical issue. Users in Japan, Hong Kong, and the US were also not experiencing difficulties, the paper said. -- AP