Two people are being questioned on suspicion of murder in connection with the deaths of five children in a house fire, English police said.
A 38-year-old man from Derby was arrested by detectives investigating the deaths of 10-year-old Jade Philpott and her siblings John, nine, Jack, seven, Jessie, six, and five-year-old Jayden.
Derbyshire Police said a 28-year-old woman had also been arrested on suspicion of murder. She remains in police custody for questioning.
The children died after a fire broke out at their home in Allenton, Derby, in the early hours of yesterday morning.
Their 13-year-old brother Duwayne, who was also in the semi-detached property at the time of the blaze, remains in a critical condition in hospital in Birmingham.
The children’s father has been named locally as Mick Philpott, who was dubbed “Shameless Mick” in 2007 for his benefit claims and refusal to get a job, in a documentary by former Conservative MP Ann Widdecombe.
Mr Philpott, said to be the father of 17 children, hit the headlines after demanding a larger house to share with his wife, girlfriend and eight children.
Mr Philpott and Duwayne’s mother are believed to be at the teenager’s bedside in hospital.
Post-mortem examinations will be carried out this weekend and forensic specialists are examining the house.
Ms Widdecombe, who spent a week living with the then 57-year-old Philpott for the programme 'Ann Widdecombe Versus The Benefit Culture', said following the tragedy: “Nobody would ever call him a bad father. I’m so sorry to hear the news and my thoughts are with the family.”
Mr Philpott is reported to have demanded the bigger property because his council house was too cramped to accommodate the family. He wanted the city council to rehouse them, but the authority said they already had the biggest available council property in the city.
Temporary Assistant Chief Constable Steve Cotterill, from Derbyshire Police, said: “There appears to have been valiant attempts by the father to rescue his children.”
He said two adults in the pebble-dashed home in Victory Road, whom he did not name, escaped the fire without serious injury after being alerted by a smoke detector.
Mr Cotterill, who said police were keeping an open mind about the cause of the fire, said: “It is a matter of a police inquiry, where we have had to act very quickly to preserve any evidence which may feature later in the inquiry.”
Speaking at a press conference, he said it was “potentially” a murder inquiry, and the woman being questioned by police was not arrested at the scene.
The six children were asleep in their beds when the fire broke out, and the two adults, including Mr Philpott, were downstairs.
He said eight people were living in the house on a permanent basis, though there might be other people who stayed there on an ad hoc basis.
Mr Cotterill said: “Our thoughts are with the parents and the family of the children for their tragic loss and for the community of Allenton, who would of course have known the children as they played.”
Friends of the family left flowers at the scene.
Daniel Walsh, who said he had been a friend of Mr Philpott for many years, called the fire “shocking”, adding: “It’s absolutely tragic. Any parent’s worst nightmare. I didn’t know his younger children. He had many children, as everybody knows, and he loved them all the same, no doubt.
“It’s just a tragic loss.”
Another neighbour, who gave her name only as Kaye, said she saw flames coming out of the house and “loads of ambulances”, and described it as a “horrible, horrible” scene.
“I just saw the babies going to the ambulance because it was parked outside our house,” she said.