Police said a 45-year-old man from Goodwood was arrested yesterday and charged with four counts of intentionally causing a bushfire.

Officers and CFS crews were called to grass fire along the side of the Flinders Highway about 8.30am yesterday.

The blaze was extinguished but a second fire was reported a short time later about one kilometre away.

Another two fires were reported along the Flinders Highway north of Streaky Bay just before 1.30pm.

Police said a witness reported seeing a man along the highway at the time of these fires. He was still in the area when CFS crews responded and detained him until patrols arrived.

The man was refused bail and will appear in the Ceduna Magistrates Court.