A man was allegedly assaulted with a weapon at a Christchurch property on Wednesday morning.
Emergency services were called to the Innes Rd property in Mairehau about 10.42am.
Early indications suggest two people were involved and a weapon was used in the assault, a police spokeswoman said.
St John spokesman Gerard Campbell said a man was seriously injured and taken to Christchurch Hospital.
Police inquiries into the incident are ongoing.
It comes after a woman was allegedly assaulted at the Margaret Mahy Playground on Sunday.
A police spokeswoman said officers were called to the Armagh St playground about 1pm. The woman was seriously injured and taken to Christchurch Hospital.