A 23-year-old woman is in a critical condition today after a serious assault in west Belfast.
Police said the incident happened in a lay-by on the Andersonstown Road at around 1.30am.
A 25-year-old woman has been arrested and is helping police with their inquiries.
A number of people were said to be in the area at the time of the assault and police are particularly keen to speak to a taxi driver who may have witnessed the incident.
The injured woman is described as critical but stable in hospital.