The historic Byron Bay rail master’s cottage was all but destroyed in a fire over the weekend, with the cause still unknown.

An elderly man was in hospital in critical condition Monday morning after an explosion and unit fire in Kingscliff that also landed a woman in hospital, emergency responders said.

The cause of a Mullumbimby fire that destroyed a local business premise on Friday evening was still under investigation Monday morning, police said.

Firefighters, NRL stars and other top athletes are urging households across the state to make sure they have working smoke alarms fitted in their homes, as Fire and Rescue NSW (FRNSW) launches its annual Winter Fire Safety Campaign.

Fire and Rescue NSW say they attended commercial premises in Fingal Street in Brunswick Heads after reports of an electrical fire at 4pm yesterday afternoon.

Last week nine fire brigades come together in Federal to simulate saving the Federal Store and village from a fire. 

Police say they believe a group of young teens playing with a lighter was responsible for a fire on the Tweed over the weekend.

Owners of an iconic wedding venue in Byron say they are urgently calling customers and relocating weddings after fire destroyed the main building over the weekend.

A fire-fighters union representative has confirmed the organisation told Tweed Heads workers not to leave their station closed for a day to attend training in Ballina last week.

Member for the Blue Mountains Trish Doyle last week told media the regional station was closed so fire-fighters could go to a community outreach program in Ballina.