We are appealing for information after a 19-year-old man was robbed in Shirley, Southampton on Saturday 15 December.
The man was chased through St James Park by several youths wearing balaclavas and dark clothing at about 4pm.
He was assaulted once he had reached Winchester Road and received a head injury for which he received treatment at Southampton General Hospital.
The victim’s rucksack was taken and later recovered in St James Park - with his phone charger and passport missing.
Did you see or hear anything at this time, or even record the incident on your mobile phone?
You may have been driving past and caught it on your dash cam.
Anyone with information should call 101 quoting 44180466407 or contact Crimestoppers anonymously on 0800 555 111.
In an emergency, call 999.