Five people have been arrested by detectives investigating a suspected arson attack on a home in Leicester that killed a mother and her three children.
Leicestershire Police, though, have said the motive for the blaze remains unknown after they found no evidence linking the family to a fatal assault on a man in the city on the same night.
Dr Muhammad Taufiq lost his daughter, his two sons and his wife in the suspected arson attack and has spoken of the pain of losing his entire family.
ITV News' Lewis Vaughan-Jones reports from Leicester:
Three women and two men have been arrested in connection with the fire, Leicestershire Police confirmed in a statement:
The grieving Dr Taufiq earlier made a "passionate" speech to around 1,500 worshippers during prayers at his local mosque.
Imam and teacher Muhammad Uwais, who was at the Jame Mosque in Spinney Hill, described this afternoon's speech:
Dr Taufiq later made a short statement to the media, in which he said he hoped that justice would prevail following the tragedy.