Police have said they believe a house fire which killed three people in Bolton, Greater Manchester was started after the gas supply was tampered with.
Earlier this week they said they were treating the blaze as suspicious.
It is understood one line of inquiry was that Hassan Rafie, 49, had unlawfully killed his wife before deliberately setting the fire.
Neighbours spoke of hearing an explosion from the kitchen of home shortly before flames spread throughout the property.
More top news
A Labour source reveals the (un)pleasantries at the shadow front bench meeting, including a confrontation between two high-profile members.
Vladimir Putin pledged support for France's "grand coalition" despite avoiding eye-contact with Francois Hollande in frosty bilateral talks.
A Conservative health minister has sparked outrage after his comments about the use of food banks and rise in obesity rates in the UK.