A Chinese health centre scammed more than 100 elderly people out of a total of over 10 million yuan (US$1.5 million) by putting soy sauce in an intestinal cleaning liquid to dupe them into thinking they had toxins in their bodies. The Beijing police have arrested more than 30 people involved on suspicion of fraud. They cracked the case after the family of a woman in her 60s discovered she had spent 700,000 yuan (US$104,000) in the health centre.