Police were called to Matthew Street in Swansea
Detectives are continuing to investigate an incident at a block of flats in Matthew Street yesterday.
We were called after a woman fell from the balcony of one of the flats at about 5.50pm yesterday.
Detective Inspector Gareth Jones, said: “We are continuing to investigate the circumstances which led to the woman being on the balcony. She is in a serious condition in hospital.
“We have arrested a 45-year-old man who remains in police custody.”
Anyone with information should contact 101 or Crimestoppers on 0800 555 111 quoting occurrence 2000268695