Police are investigating after three small fires were lit in the Walkerville and Gilberton area overnight.
Police and fire crews responded to fires in Warwick Street and Stephen Terrace, Walkerville, and Frederick Street, Gilberton around 12.15am on Tuesday 30 April.
The small fires burnt leaves and vegetation. No property was damaged.
Of concern, the grapevine attached to a hotel in Stephen Terrace was set alight, with the potential to cause significant damage, but was quickly extinguished by the MFS.
Police searched the area but did not locate any suspects.
Anyone who saw or heard any suspicious activity in the area around midnight is asked to contact Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au