The number of victims forced to donate blood in Gansu province has increased to 10.

More details are being revealed as investigations continue into the scandal that saw a group of children under the age of 18 forced to donate blood every month between November and May.

A group of seven individuals in Wuwei, Gansu, were involved in the scandal. They were led by a man named Huang, identified as the deputy chief of a blood center run by the Lanzhou Institute of Biological Products, and illegally collected 10,700 yuan ($1,740) through more than 48 forced blood donations.