The tragic incident took place after the deceased, 19, apparently told the men not to be a nuisance and drink beer at the promenade.
It was then the four men began attacking him with crash helmets.
The teenager, identified as Ameer Mustaqim Naharuddin, a cleaner at Universiti Sains Malaysia here, died on the spot.
Several eyewitnesses immediately alerted the police over the incident, which occurred around 2.40am.
– THE STAR