A fourth man has been arrested over a fatal flat fire in Derbyshire which killed three people, including a mother and her baby daughter.
Derbyshire Police said officers had arrested a 24-year-old at an address in Long Eaton on suspicion of murder.
Three men were already being questioned by detectives after 17-year-old Amy Smith and her six-month-old daughter Ruby-Grace Gaunt died in the blaze in Langley Mill, Derbyshire, early on Sunday.
Three men have been arrested on suspicion of murder after a young mother, her baby daughter and a family friend died in a house fire in Derbyshire.
The trio who died in the blaze on North Street in Langley Mill on Sunday have been named as 17-year-old Amy Smith, her six-month-old daughter Ruby-Grace Gaunt, and 17-year-old friend Ed Green.
A 17-year-old from Long Eaton and a 21-year-old and 43-year-old from Sandiacre were all arrested late last night on suspicion of murder, Derbyshire Police said.
The three men remain in custody and are being questioned.
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