Two people were injured in a multi-vehicle pileup in Paeroa this morning.

A stretch of State Highway 2 in the Waikato town was closed while police investigated the crash.

Traffic would detour along Taylor Ave and Brenan St before rejoining the main road.

St John said one person was flown to Waikato Hospital in a critical condition and another was taken by ambulance to Thames Hospital in serious condition.

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