A woman in her early 60s remains in the critical care unit at Whanganui Hospital following a crash on SH3 on Tuesday evening.
The crash occurred near the Whangaehu River bridge shortly before 5pm when a ute and van collided.
Meanwhile, two males in their early 30s are in the surgical ward in a stable condition and one 6-year-old is in the paediatric ward in a stable condition.
A helicopter was called to transport one person to hospital and the road was closed for around two hours while the Serious Crash Unit examined the scene.