Beijing, April 15, SPA -- The United States warned Americans on Friday of possible anti-Japanese demonstrations across China, saying the demonstrations could turn against foreigners in general. "Because of the fluid nature of such events, American citizens travelling in China should be alert for demonstrations and or marches occurring at other times and locations without prior warning," a U.S. Embassy e-mail said. "The demonstrations are purportedly against Japanese interests, but could involve foreigners in general." It said there were unconfirmed rumours of calls to stage demonstrations this weekend in Beijing, Shanghai, Shenyang, Guangzhou, Dongguan, Tianjin and Chengdu. --SPA 1252 Local Time 0952 GMT www.spa.gov.sa/254783