Google services are being disrupted in China ahead of this weeks 25th anniversary of the 1989 crackdown on pro-democracy demonstrators around Beijings Tiananmen Square, a censorship watchdog said on Monday. GreatFire.org said in a blog post that the government appeared to have begun targeting Google Incs main search engine and Gmail, among many other services, since at least last week, making them inaccessible to many users in China. But because the block has lasted for four days, its more likely that Google will be severely disrupted and barely usable from now on, the advocacy group said. Asked about the disruptions, a Google spokesman said: Weve checked extensively and theres nothing wrong on our end. Google in 2010 moved its Chinese search engine service out of China, the worlds second-largest economy, citing rampant censorship, and now operates it from Hong Kong.