Police are hunting for firebugs believed to be responsible for lighting several suspicious blazes in the Lake Illawarra area.
Detectives are investigating seven fires deliberately lit in the past month.
Police were called to a scrub fire on Hooka Creek Road, Berkeley on Tuesday about 2.30am where the blaze was believed to have started next to the road near Berkeley Netball Stadium.
Police attended the scene and are investigating the fire's source.
It's really distressing to see so many fires being deliberately lit, particularly with recent weather conditions.
Acting Superintendent Gordon Dunlop said the recent weather conditions were a real cause for concern.
"It's really distressing to see so many fires being deliberately lit, particularly with recent weather conditions," the Lake Illawarra Police District Acting Commander said.
"Even something as simple as flicking a cigarette butt into grass can have devastating impacts.
"We're really urging the whole community to be vigilant and dob in a tosser and report any suspicious behaviour.
"Information provided to police from members of the public can help us identify and suppress fire bugs before they start lighting.
"I want to urge members of the community - if you see something, say something."
The public call for information follows another fire on Monday at about 8pm when police came across a small grass fire while patrolling Shellharbour City Centre.
The day before emergency services were called to a bushfire at Seven Mile Beach National Park, Gerringong about 5pm.
The fire was extinguished by the NSW Rural Fire Service and a crime scene was established.
An off-duty police officer noticed smoke coming from the sand dunes about 100 metres north of the life guard tower of Warilla Beach on Thursday about 1.30pm.
Detectives believe the fire may have been deliberately lit by a group of young people who were seen in the area around the time of the fire.
About 10.30am on Tuesday, when a catastrophic fire warning was in place, police were called to a school in Kanahooka following reports of a deliberately lit fire within the school grounds.
Detectives attended the school and are investigating how the fire was started.
NSW Fire and Rescue attended a small scrub fire on the western side of Hooka Creek Road, Berkeley, approximately 200m from Hertford Street on the same day about 2.30pm.
The fire extended approximately 100m west before being extinguished by firefighters.
On October 21, emergency services were called to Killalea State Park in Shell Cove about 7pm following reports of smoke coming from scrub land to the south of the beach viewing platform.
The fire was extinguished by firefighters and a crime scene was established.
Anyone with information about any of the fires is urged to contact Lake Illawarra police or Crime Stoppers on 1800 333 000.