Six men have been arrested and two woman following a house fire in Birkby in 2002.
The men, aged 64, 35, 34, 28, 25 and 16, and the woman, aged 55 and 32, have been arrested on suspicion of assisting an offender. All have been released on police bail.
The fire back in May 2002 claimed the lives of eight members of the Christie family.
Six-month-old Najeebah Nawaz, Aneesa Nawaz aged two, Tayyaba Bootall aged three, Ateeqa Nawaz aged five, Rabiah Bootall aged ten, Muhammed Ateeq-Ur-Rehman aged 18, and Nafeesa Aziz aged 35 all died in the fire at 40 Osborne Road in Birkby on May 12 and 54-year-old Zaib-U-Nisa died in hospital a week later on Sunday May 19.
Back in February a major day of action was held which saw more than 100 police officers including HMET detectives, operational support staff and neighbourhood policing team officers distribute nearly 6,000 information flyers and visit more than 80 addresses in Huddersfield and the surrounding areas.
Police were trying to trace Shahid Mohammed who was originally arrested in 2003 in connection with the fire after failing to answer police bail.
In July 2003, three Huddersfield men - Shaied Iqbal, Shakiel Shazad Amir, and Nazar Hussain were convicted for their part in the crime. Nazar Hussain has since been released on parole.
Police are still investigating the crime and anyone with information concerning the incident should contact police on 101 or Crimestoppers anonymously on 0800 555111.