Someone knows what happened that evening and I am urging them not to remain silent but to come and speak to us. Your information will be treated in the strictest of confidence.
Likewise I am directly appealing to the family members and friends of those believed to be involved - if you have slightest indication the person you know may have been involved in this incident I encourage you to get them to hand themselves into the police.
Failing to do so will result in my officers pursuing them.
More top news
According to a recent report young carers aged 5-8 are amongst the most hidden and least supported group of unpaid carers in the UK.
The review will look at how the city would cope if multiple terror attacks were launched.
Eric's been performing his impressive stunts at Clissold Park and even skates the half pipe.