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
A mother and her four young children who are feared to be travelling to Syria are being sought by police.
As we go into the Bank Holiday weekend, the changeable weather pattern looks set to continue.
A Chelsea pensioner has been imprisoned for 12 months for sexually assaulting a young woman in his room.