Police are investigating injuries to five-week-old baby. It's believed the injuries are non-accidental.
The baby has been flown from Invercargill to Starship Hospital in a serious condition.
Police are speaking to the baby's family but would also like to hear from anyone with information that can assist the investigation.
People can call Invercargill police on (03) 211 0400 or Crimestoppers anonymously on 0800 555 111.