Police are concerned about an increasing number of suspicious grass fires in the Buln Buln East area.
Three grass fires were reported on Friday in the Old Telegraph Rd, Buln Buln East and Shady Creek areas.
Police said it appeared the fires were being lit with materials available at the scene.
Investigations are continuing. Anyone with information that may assist police can contact Warragul Police 5622 7111 or Crimestoppers 1800 333000.