A 92-YEAR-OLD grandmother died yesterday after collapsing because of the cold as weathermen warned of chillier days ahead. The woman, who lived with her daughter and son in Ho Man Tin, was found lying unconscious on the bathroom floor of her home after temperatures dropped to 10 degrees Celsius. She was pronounced dead at Queen Elizabeth Hospital. Police said the cause of her death was related to the cold weather. Blankets were distributed to elderly people yesterday as the Observatory said temperatures could fall under nine degrees on Tuesday. Social Welfare Department assistant director Lau Wong Kwok-sing said: 'We will visit as many people as possible and use any means to keep in contact with the elderly who are being threatened by the cold.' The Home Affairs Department last night opened eight centres for the homeless providing clothing, blankets and three meals a day. Health Department officials urged people to eat rice and noodles to ward off the cold. It was an effective way for the body to cope. Some 20 people have died of cold-related illnesses since the beginning of the year, 19 of them elderly.