A man "fired a weapon" at people outside a party in Tokoroa early Sunday morning, injuring several, police say.
Police said they heard several reports of loud bangs at an address on Charles Street at about 1.25am on Sunday.
They said it appeared a man "fired a weapon" toward a group of partygoers on the road.
Two young men remain in Waikato Hospital today with shrapnel wounds, and several others sustained minor to moderate injuries.
Detective Sergeant Mihi Owen said a group of young people were turned away from the party shortly before the incident.
The group made threats and threw bottles toward the partygoers.
They left the scene in a blue Mazda RX8 and a dark grey vehicle, possibly a Jeep, she said.
A Charles Street resident said she had phoned the police after hearing a loud explosion followed by someone yelling that their friend had been shot.
The resident told RNZ she heard an enormous explosion, screaming, and threats of violence.
She said it was clear the group of people involved had been drinking, and music had been blaring from the party hours beforehand.
Anyone with information about the incident is urged to get in touch with Tokoroa Police or call Crimestoppers.