A man is in a stable condition in Whanganui Hospital after being stabbed in the back in the early hours of Sunday.
A police spokesman said the man was found lying in Victoria Ave about 2.55am, by a member of the public.
"That person called an ambulance and the man was taken to hospital in a serious condition, but that's now been downgraded to stable."
He said police were investigating the incident and were waiting until the man's condition had improved to interview him.
No arrests have so far been made.
The spokesman said police would like to hear from anyone who saw any suspicious activity in Victoria Ave in the early hours of Sunday.