A St John spokesperson said one patient was treated on the scene and is in a critical condition.
A police spokesman said the incident was reported just before 3.30pm and was a single vehicle collision.
SH1 SOUTHERN MWY - CRASH - 5:05PM Due to a crash, the left lane is now CLOSED between Drury and Papakura. Please expect DELAYS & consider an alternative route. An update will be provided when the road status has changed. ^LZ pic.twitter.com/Yidtmgn14e
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) December 5, 2021
Yesterday, a crash that killed two people in Auckland last night was one of several vehicle crashes in the region, with police rushed off their feet for the second night in a row.
Emergency services were also dealing with assaults and disorderly conduct overnight, much of it fuelled by alcohol.
A police spokeswoman said Tāmaki Makaurau staff - working in Auckland City, Counties Manukau and Waitematā - reported a busy Saturday night, with calls for service to alcohol-related disorder and assaults, and a number of vehicle crashes.