Paul McCauley before he was attacked two and a half years ago
Police are to review the investigation into a sectarian attack which left a civil servant with permanent brain damage.
Paul McCauley was beaten up by a mob at a barbecue in the Waterside area of Londonderry almost four years ago.
Only one of the gang - 19-year-old Daryl Proctor - has ever been brought to justice.
Paul's father, Jim, met police on Thursday and said the family was hopeful progress could be made.
"The case has held a high profile with the police - there has been an ongoing investigation," he said.
"But there was also the feeling that perhaps the bulk of the material was getting on top of a small team and it would be time to take a fresh look at it."
On 16 July 2006, Paul McCauley was at a barbecue in Chapel Road in Derry. It was a farewell party for a friend who was heading off to teach abroad.
Paul was standing around a bonfire with two other friends, Mark Lynch and Gavin Mullin when they were attacked by a gang.
They were knocked to the ground and repeatedly kicked and stamped on. Part of Paul's skull was crushed when his head was stamped on.
As a result he suffered permanent brain damage and is expected to remain in a vegetative state for the rest of his life.
Doctors say his life expectancy is between 10 and 15 years.