"Those involved moved onto Great North Rd and continued fighting," he said.
"Two people sustained critical stab wounds during the fight and were taken to Auckland Hospital by friends.
"They have since undergone surgery and are stable."
Police are continuing to investigate the circumstances of the assault, with a scene examination underway this morning.
The road is currently closed between Crummer Rd and Williamson Ave and could be for the majority of the morning.
"We apologise for any inconvenience this may cause," said Baber.
Members of the public with any information about the incident are urged to contact The Auckland City Crime Squad on 09 302 6557.
Information can also be passed on anonymously through Crimestoppers on 0800 555 111.