THREE fires ablaze in bushland around the Tweed this weekend could have been deliberately lit, according to the NSW Rural Fire Service.
The service battled a fire at Cudgen on Friday that burnt 95 hectares and led to the closure of the Tweed Coast Rd.
The service was also called to a fire south of Casuarina on Saturday and then again to Fingal on Sunday.
Rural Fire Service group captain David Cook said it was too early to tell if they were deliberately lit but investigations were continuing.
"It's not people burning off," Mr Cook said.
Mr Cook said each fire started in remote areas making it difficult for firefighters to put out.
He said two National Parks units and two rural fire service units were patrolling the affected areas today to ensure there was no flare up of the fires.
Firefighters managed to contain the fire Cudgen Nature Reserve on Friday with a change in wind direction stopped it from spreading into residential areas.
The two subsequent fires (south of Casuarina and Fingal) were extinguished before threatening property.