At least 11 people - most of them children - died, and three were missing after a ferry sank in a river in the southern Chinese province of Hunan, the government's Xinhua news agency reported Saturday. Police detained the two owners of the boat following the accident late Friday. The ferry was taking 43 children and teachers from two schools across the Fuyi river near Hunan's Shaoyang city, the agency said. Nine children and two adults died, including one child who drowned after saving two others. Six people were injured. Guo Meitao, 14, told Xinhua news agency that she had rescued her 63-year-old grandmother from the river. Guo said she and her grandmother scrambled to a sandbank in the middle of the river, where they waited with other survivors for about 30 minutes before they were rescued.