The eight arrests over an arson attack more than a decade ago that left eight family members dead came after police launched a fresh drive to find someone wanted in connection with the crime.
Shahid Mohammed has been wanted in relation to the fire since he skipped bail in 2003.
Three generations of the same family died in the blaze on Osborne Road on May 12, 2002, Nafeesa Aziz, 35, died with her daughters - Tayyaba Bootall, three, Rabiah Bootall, 10, Ateeqa Nawaz, five, Aneesa Nawaz, two, and Najeebah Nawaz, six months.
Miss Aziz's brother, Mohammed Ateeq-ur-Rehman, 18, also died in the fire, while their mother, Zaib-un-Nisa, 54, died a week later in hospital.
In July 2003, three men - Shaied Iqbal, Shakiel Shazad Amir and Nazar Hussain - were convicted for their part in the crime. Hussain has since been released on parole.
One of the men accused of plotting to kill Joss Stone has told a jury he had never heard of the singer before his arrest. Junior Bradshaw said he thought he was going for ‘a day out’ in the country when he travelled to Devon with flatmate Kevin Liverpool.
Bradshaw told Exeter Crown Court he had no idea that the car he was driving contained an arsenal of weapons and said he did not know why there were two knives, two hammers and two balaclavas in it.
The former mental patient said he was sharing a small flat in Manchester but had no inkling about the plan he was allegedly cooking up to attack Joss Stone at her home in Devon. He denies all charges, as does his fellow defendant, Kevin Liverpool.
A West Yorkshire care home worker spat in the face of an elderly resident saying, "she'll learn now, she'll never spit at me again," a court has heard.
Hope Young, 18, is accused of ill-treating Margaret Castleton at the Green View House care home, in Huddersfield, as well as others in her care.
Young is on trial at Leeds Crown Court along with two of her former colleagues at the home for elderly men and women, many of whom had dementia problems.
The jury was told how she is alleged to have spat at Mrs Castleton, who was in her 80s, after the resident wiped saliva onto her.
Mark Senior, 28, of Manchester Road, Linthwaite, Huddersfield, denies 10 counts of ill-treating or neglecting persons who lack mental capacity. Young, of Pennine View, Linthwaite, Huddersfield, denies eight similar charges.
The third defendant, Louise Dent, 24, of Greenlea Court, Dalton, Huddersfield, denies one count of the same charge. The home has now closed, the court heard. The trial continues.