A pregnant woman lost her unborn child when a doctor mistakenly performed an abortion on her after medical staff mixed up her medical chart with that of another patient.

Seoul Gangseo Police Station on Monday said they arrested a gynecologist and a nurse for wrongly conducting an abortion on a six-week pregnant woman by failing to check the patient’s information before the operation.

According to investigators, the alleged victim — a Vietnamese national — who was six weeks into her pregnancy was prescribed nutritional supplements last month. When she entered the delivery room — where the hospital apparently also gave injections and conducted surgeries — neither the nurse nor the doctor checked the patient’s identity. Confusing her for the patient on the charts they were looking at, the nurse injected the patient with anesthesia after which the doctor performed the abortion.