Four people have been charged with the murder of the family of a Beaumont Hospital doctor in Leicester on 13 September.
A 16-year-old youth, a 24-year-old man and two 19-year-old men have all been charged with the murder of a family of four in Wood Hill, Leicester.
They are due to appear before Leicester Magistrates' Court tomorrow.
Two men, aged 20 and 19, remain in police custody and a 21-year-old man has been released with no further action.
An 18-year-old man who was charged with murder on 19 September is due to appear at Leicester Crown Court at a later date.
The fire broke out at their home in the Spinney Hills area of Leicester in the early hours of 13 September.
The mother and her children died in their bedrooms.
The family is originally from Pakistan and had a home in Ireland for at least 15 years.
They were together about a month ago spending the festival of Ramadan in Ireland.
The children moved to the UK with their mother about five years ago for Islamic education but returned regularly to be with their father at his home in Castleknock.