POLICE are investigating an explosion at a retail outlet in the City CBD overnight.
At about 1.30am, police attended the shop on the corner of King and Hay Street, where fire damage to the surrounding area and front door was found.
Two people were seen in the area at the time including a man wearing long dark coloured pants, a t-shirt, and dark coloured shoes.
He was with a woman, with a waist length jacket, long dark coloured pants and dark shoes.
Anyone with information should call Crime Stoppers 1800 333 000.