INVESTIGATORS believe a half-hectare grass fire at Dimboola might have been deliberately lit.
The Country Fire Authority issued an emergency warning for the town on Thursday afternoon because of a fast-moving, out-of-control grass fire near the weir at the end of Anderson Street.
The threat never eventuated, with the emergency warning downgraded soon afterwards.
CFA District 17 operations manager Dale Russell said the cause of the fire was being investigated.
"Police have been involved," he said.
Fire crews were called to the blaze about 5.40pm on Thursday.
CFA units from Dimboola, Antwerp, Pimpinio and Gerang Gerung and Department of Environment and Primary Industries fire-fighters had the fire under control by 6.10pm.
Dimboola fire captain Wayne Hartwich said a small fire-fighting vehicle was instrumental in tackling the fire in fairly inaccessible terrain.
"The fire was not huge, but it had a lot of potential," he said.
Fire-fighters also extinguished an unrelated header fire at Coromby on Thursday.