A man who was thought to have suffered life-threatening injuries in Māngere after a fall was assaulted, police say.

Emergency workers were called to the Māngere Town Centre around 3.40am on Sunday to find a man critically injured. St John initially reported the man had been hurt in a fall. However police now say they believe the man was attacked.

He was taken to Auckland City Hospital, where he remains in a serious but stable condition.

They have not confirmed whether or not a fall was involved.


Man fighting for his life after being found injured in Mangere town square

"We are continuing to ask anyone that was in the area at the time and witnesses the incident to contact Police on 105," a statement from police said. "People can also contact Crimestoppers anonymously on 0800 555 111."

It was the second serious assault in the suburb in 24 hours. At 3.50am on Saturday a man was assaulted on nearby Naylors Drive.

The victim, aged 31, was taken to hospital in a critical condition and has since died.

Two men aged 20 and 23 were arrested and charged over that incident and were to appear in court today, while a third man was still being sought.

Police have since upgraded the assault investigation to a homicide and said they may lay further charges.