Police say the man who king-hit Thomas Kelly in Kings Cross also assaulted several other people on the same night.
Mr Kelly, 18, a former Kings School student, later died in hospital.
Kieran Loveridge, 18, of Seven Hills, was arrested at the Belmore Sports Ground last night and has been charged with one count of murder, one count of assault occasioning actual bodily harm and two counts of common assault.
He was denied bail and will appear at Burwood Local Court today.
Acting Commissioner Catherine Burn commended officers on their hard work investigating the assault.
She said Thomas wasn’t the only person who was attacked that night.
‘‘We will be alleging that there were three other assaults that occurred,’’ Acting Commissioner Burn said.
‘‘We will allege that there was an assault prior to the assault on Thomas and several that occurred after. ''
She said the arrest was a relief for the grieving Kelly family.
‘‘I really pay my respects to the family . They have been unbelievably strong and dignified.
‘‘Our hearts really go out to the whole family.’’
Mr Kelly’s funeral will be held tomorrow and the Kings School will also hold a memorial service for him.
‘‘Investigators have been working day and night on a number of lines of inquiry and I would like to acknowledge and recognise all police involved in this matter, particularly the investigators from the Kings Cross area command and the homicide investigators from the state crime command.
‘‘They have worked tirelessly in this matter and they have brought this result today.
‘‘I would also like to thank Thomas' family for all the assistance they have given us, especially in this very difficult time for them.
‘‘I really do thank them and so does the entire NSW Police force.
‘‘The investigators have been going through an enormous amount of CCTV footage and we’re fortunate that this was available to us .
''It is only one investigative tool though.’’