Detectives investigating the house fire in Harlow that killed a woman and all five of her children, are now treating the deaths as murder.
The blaze was started by burglars in the lounge, and the flames then spread throughout the house.
There is a £10,000 reward to help catch the killers.
Lauren Hall reports.
More top news
Key transport staff in London are being refused leave amid fears of fuel shortages and possible riots if Britain crashes out of the EU.
Former Labour shadow business secretary Chuka Umunna was tipped by ex-Tory MP Heidi Allen.
The letter to Sajid Javid said the baby boy was a ‘true innocent’.