Tuggerah Lakes Police will return to Chain Valley Bay today, as investigations into a suspicious fire continue.
Fire crews were called to Scaysbrook Avenue around 4:30pm yesterday, finding bushland alight.
They got the flames out after just under three hours of fighting.
Police have since been told there were multiple ignition points for the blaze, and two people on trail bikes were seen in the area around the time it started.
They're now appealing for more info - contact Crime Stoppers or Tuggerah Lakes Detectives if you can help out.