The Health and Safety Executive is leading the investigation into the cause of a massive explosion which ripped through a family home and left a mum and daughter badly burned.

The investigations into the cause of the gas explosion in Wrentham began on Christmas Eve and are continuing while mother-of-two Lynn Brown remains in hospital.

On Wednesday, her 18-year-old daughter Lucy Green was able to return to view the damaged home.

Lucy, who is a student at Sir John Leman Sixth Form in Beccles, suffered burns to her shoulder, arms and legs, and is now staying with her sister Lisa Brown, 31, in Southwold.

Over a week on from the explosion, the semi-detached house stands as a charred reminder of the explosion.

Lynn has told relatives that the blast happened when she flicked a switch to put the kettle on to make a mug of tea for a worker who was clearing an old boiler from outside the house. A new boiler had been fitted at the rear of the property in the previous two days.

She was able to walk out of her burning home, while Lucy had to jump from a first floor bedroom into the arms of the worker.

Lucy's bedroom is at the rear of the house, but due to the work that had been going on she was sleeping in the front bedroom that night.

Their two dogs, a bearded collie and a Labrador, also managed to escape the blaze.

Three investigators were sent to the house on Christmas Eve by the Health and Safety Executive, and two are continuing to head the work.

A spokesman said: 'Investigations are going on. We are working closely with the police and other authorities to determine the cause and ensure the site is safe.'

Gas network operators National Grid are said to be on standby and waiting for the go-ahead to look at the house.

A spokesman said: 'We have carried out tests on the mains in the area, checking for possible escaping gas and the next thing we must do is test the service to the property and the meter.'

British Gas is also working fully with the team.

Media relations manager Leonie Edwards said: 'This has clearly been a distressing experience. We are co-operating with the Health and Safety Executive who are conducting the investigation.'

None of the parties would comment specifically while investigations are ongoing.

The adjoining house in Chapel Road was unoccupied and police have described it as 'unsafe', but the owner has been to survey the damage.

A collection has been set up by neighbours and fellow villagers to raise funds to support the family.