Eight people have been arrested in connection with an arson attack that left eight members of the same family dead more than a decade ago.
Five children and three adults died in the house fire in Birkby, Huddersfield, in 2002.
One man was convicted of murder and two of manslaughter following the attack.
Eight people have now been arrested on suspicion of assisting an offender, West Yorkshire Police have confirmed.
A spokesman said six men - aged 64, 35, 34, 28, 25 and 16 - and two women - aged 55 and 32 - were detained and have been bailed.
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