State Highway 1 has reopened after a serious, multi-vehicle crash caused chaos near Ōtaki this morning .
One person has been airlifted to hospital in critical condition, while three others are injured after the crash.
A St John spokesperson told the Herald they were called to the incident on SH1 just before 6.30am this morning where they found four people injured.
"Four patients were treated and transported to hospital – one in a moderate condition and one in a serious condition were transported by ambulance. One in a serious condition was airlifted to Palmerston North Hospital. The remaining patient was airlifted to Wellington Hospital in a critical condition."