Tumut police officers were patrolling the local streets when they were flagged down by a resident.

He reported that a man had arrived at his Quandong Avenue home with a number of stab wounds.

Paramedics were called and they treated the 22-year-old at the scene before he was taken to hospital. He was later flown to Canberra Hospital in a serious condition.

A crime scene was established and police arrested a 35-year-old man a short time later.

He was taken to Tumut police station and is assisting detectives with their inquiries, police said.

Anyone with information relating to the incident is urged to contact Crime Stoppers on 1800 333 000 or through the online reporting page.