Police are appealing for witnesses following an incident last Sunday.
It happened at about 3.10pm on September 20, on the grassed area of Victoria Crescent, Douglas.
A male was seen “assaulting” another male before leaving the area in a black Ford ST‑style vehicle travelling towards Broadway.
Police say the vehicle was driven by a female with blonde hair.
Investigating offices believe the incident was filmed by someone nearby.
A spokesperson said: “Anyone who may have video footage, witnessed the incident or anyone that has information and not yet spoken to Police is asked to contact Police Headquarters quoting reference 97/6286/26.”
Information can also be provided anonymously via Crimestoppers on 0800 555 111.