A man stabbed in Lower Hutt last night is in a critical condition in Wellington Hospital's ICU.

The man was stabbed at a property in Avalon bout 8pm, and was flown to hospital by helicopter in a serious condition, a police spokeswoman said.

Police last night working with a woman to find the offender.

It was believed he was known to the victim and is not a risk to the public, the spokeswoman said.