A 16-year-old boy was seriously injured in what police have described as a "cowardly unprovoked group attack" outside a party in Dunedin.
The assault happened on Malvern St outside a house party between 10.30pm and midnight yesterday.
Detective Sergeant Rob Hanna said the boy was approached by four or five males believed to be aged between 16 and 18.
"The group attacked the victim in an unprovoked sustained assault," Mr Hanna said.
"This included kicking the victim in the head and body area after he had fallen to the ground."