The father of one of four firefighters killed in a warehouse blaze in Warwickshire was arrested in connection with the deaths, it has emerged.
Paul Stephens, 54, was one of three men questioned last Wednesday on suspicion of gross negligence manslaughter and offences under the Health and Safety at Work Act.
Mr Stephens's 20-year-old son Ashley died alongside Darren Yates-Badley, 24, John Averis, 27, and Ian Reid, 44, in the fire at a vegetable packing plant in Atherstone-on-Stour, Warwickshire.
Speaking from the family home in Alcester, Warwickshire, on Monday, Mr Stephens's wife Sharon confirmed her husband, a retired firefighter, had been arrested and bailed without charge by Warwickshire Police last week.
Mrs Stephens said her husband had been working on the night of the blaze in November 2007, adding: "He went to work that night and lost his son. This is a terrible, terrible tragedy."
Warwickshire Police confirmed that a 54-year-old man and two others aged 42 and 52 were arrested on suspicion of gross negligence manslaughter last week.
A spokesman said the three men, all from south Warwickshire, were also questioned about alleged offences under the Health and Safety at Work Act after presenting themselves at a police station in the county on Wednesday morning.
He added: "We cannot confirm the identity of anyone who has been arrested in connection with the investigation into the fatal fire at Atherstone-on-Stour. This would be against force policy and not in the interest of the investigation or the individuals concerned."
Three other men who were arrested in February in connection with the fire remain on police bail.