Police investigating an alleged attack at the Chinese consulate in Manchester have said they have identified a number of offences including assaults and public order offences in their investigation.
On 16 October, a peaceful pro-Hong Kong democracy rally outside the consulate turned violent.
Greater Manchester Police (GMP) is investigating the alleged assault of Bob Chan, after images appeared to show him being dragged into the consulate grounds before being punched and kicked.
He claims he was left with cuts and bruises all over his body, and a senior diplomat was accused of being involved and pulling Mr Chan's hair.
In a new update, the force said it is continuing to work with detectives to establish the full circumstances of the incident.
Investigators have been gathering a range of evidence including CCTV, police body-worn video, mobile phone footage, and witness statements from as many people involved as possible to assist in capturing a rounded understanding of what happened.
The force added that the number of offences identified includes assaults and public order offences that "concern events that left a man in his 30s with several minor physical injuries after being allegedly assaulted in the consulate grounds".
Police said the alleged attack followed an initially peaceful protest that appeared to escalate, and they are looking to find out why.
Assistant Chief Constable Chris Sykes described the investigation as "a complex inquiry".
He continued: "We're continuing to gain a clearer understanding of the timeline of events that led to an initially peaceful protest escalating in the way it did. This has seen us identify a number of offences and potential suspects and victims.
"This is a sensitive but, importantly, objective investigation that will involve us working for as long as required to speak to all those concerned to achieve as many answers as we possibly can, and we will continue to provide updates where necessary in due course."
Police said no other injuries were reported to them besides a minor physical injury to the hand of an officer who intervened to help remove the man in his 30s from the consulate grounds out of fear for his safety.
The force added it is actively seeking other potential victims of incidents during the disturbance.
No arrests have yet been made and enquiries continue.