A second person has been arrested over a double stabbing in Grey Lynn.

A 34-year-old man has been charged in relation to assault with a weapon, police said today.

It follows the arrest of a 23-year-old man yesterday.

Two people suffered critical injuries after being stabbed outside a Grey Lynn bar in the early hours of Sunday morning.

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Both victims remained in hospital yesterday.

Police earlier said that a "large" fight began at the Grey Lynn Tavern about 1am, and spilled out on to Great North Rd.

Acting Detective Inspector Glenn Baldwin said police had completed a thorough scene examination but were still examining CCTV footage in the area.

"We believe there were a number of people recording the incident on their mobile phones and we would like anyone who has footage to get in touch with us," he said on Monday.