UPDATED: State Highway 2, south of Katikati, is now open following a serious crash earlier this evening.
Two people are in critical condition after a two-vehicle crash which saw the highway closed around 5.30pm.
Police say the highway, between Wright and Aongatete roads, is now open.
"Motorists are advised to drive with care and exercise patience as the backlog of traffic clears."
Police are investigating the cause of the crash.
Two people are in a critical condition after a two-vehicle crash south of Katikati on State Highway 2.
Emergency services were called to the crash, which is at the intersection of Wright Rd, just after 4.30pm.
Police say the highway is blocked.
"Motorists travelling the stretch of highway between Tauranga and Paeroa will need to divert over the Kaimai Ranges."
We will bring you more information as soon as it's released.