Police hold genuine concerns for the welfare of Thien (Peter) Nguyen after an incident at Parafield Gardens last night, according to SA Police.
Just before 5pm on Monday 24 July, police and paramedics were called to a house on Bardsley Avenue where a woman had been allegedly shot in the leg with an arrow.
Police believe Mr Nguyen was at the scene and was injured during the incident requiring medical attention for a serious injury.
Despite extensive enquiries Thien (Peter) Nguyen has not been located.
He is described as of Asian appearance, 160cm tall, 75kg, medium build with brown hair.
Police are encouraging Mr Nguyen to seek urgent medical assistance. If any person sees Mr Nguyen or who may have any information as to his whereabouts contact the Police Assistance Line on 131 444.