Police are investigating a suspicious fire at Adelaide.
About 6pm today (Wednesday, 2 June) police and MFS crews were called to a massage business in Vaughan Place near the corner of Rundle Street after reports of a fire.
Four people from inside the premises were treated for minor injuries including smoke inhalation.
Road restrictions are in place, and please avoid the area if possible.
Police suspect that the fire was deliberately lit.
Any witnesses are asked to call Crime Stoppers on 1800 333 000, or online at www.crimestopperssa.com.au