A doctor in South Korea performed an abortion on a 6-week old fetus by mistake earlier in August.
Police announced an investigation on Monday into the clinic's mix-up in medical charts and the failure to check the woman's identity, Gangseo police have said.
The doctor and nurse in charge at the clinic in the district of Gangseo, Seoul, are under investigation and the case will soon be sent to the prosecutor's office, police told CNN.
"The doctor and nurse have acknowledged their fault," a police officer said.
The two staff are now being accused of negligence resulting in bodily harm.