Aubree Birtle

Police have named Bryonie Gawith, 29, and her daughter Denisty Birtle, 9, son Oscar Birtle, 5, and daughter Aubree Birtle, 22 months, who all died after the incident on Westbury Road where a house was set on fire in Bradford in the early hours of the morning.

A 39-year-old man was arrested at the scene on suspicion of murder and had been taken to hospital with critical injuries.

West Yorkshire Police confirmed the family's names at a news conference at the scene on Wednesday afternoon and also stated that they believed the incident was "domestic" in nature.