The attack happened at Donegall Square West which is close to City Hall in Belfast
A 19-year-old man has been arrested after another man was attacked at a bus stop in Belfast city-centre.
Police said the incident happened at Donegall Square West on Friday when two men were verbally abusing a woman foreign national.
A 31-year-old man intervened and one of the men hit him on the head with a bag which contained a bottle.
He suffered a two inch gash to the head and his attacker ran off.
Police said the 19-year-old man was arrested near Central Station in Belfast.
