Police have renewed their appeal for information about the sectarian assault six years ago in Derry on Paul McCauley which left the 35 year old in a vegetative state.
The assault took place on open ground at the back of a house in Chapel Road in the early hours of 16 July 2006.
One man was jailed for 12 years for his part in the attack. A total of 25 people have been arrested and interviewed as part of the police investigation.
Detective Inspector Ian Harrison is appealing for anyone with information, even if they think it is insignificant, to come forward in confidence:
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