One man has been injured and another arrested after a "domestic dispute" at a house on Grey St in Hamilton.
Police were called to the address after a fight was reported at 3.50pm.
Two men were involved in a dispute, a police spokeswoman said.
"One of them has either fallen or been pushed off a second storey balcony."
He was taken to Waikato Hospital with serious injuries, a St John ambulance spokeswoman said.