Asunta Yong Fang Basterra Porto (born Fang Yong; 30 September 2000 – 21 September 2013) was a Chinese-born Spanish girl whose body was found in Teo, A Coruña, Galicia, Spain, on 22 September 2013, shortly before her thirteenth birthday. The coroner determined she had died by asphyxiation, and had been given at least twenty-seven Lorazepam pills on the day of her death, more than nine times a high dosage amount for an adult. The investigation into the death became known as the Asunta Basterra case (Spanish: Caso Asunta Basterra).