The family of Kim Buckley, Kayleigh and 6-month-old Kimberley said they felt 'justice was served' as Carl Mills was jailed for 30 years.
A statement, issued on behalf of the family by Gwent police, added:
"Carl Mills starts a life sentence for three murders but for us, the family and friends of Kim, Kayleigh and Kimberley, our life sentence started on 18 September last year when three beautiful innocent people were torn from our lives."
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The 37-year-old Somali immigrant to Canada died after being beaten by several police officers, according to local media reports.
This evening it'll become largely dry across the UK as the showers in the west gradually die down.