A man has been arrested following the death of Conan Anderson in Belfast.
Mr Anderson, aged 22 and from the Short Strand, died in hospital on Sunday after suffering a head injury during an night out in the city.
Detective chief inspector Peter Montgomery said a man aged 26 was detained in Belfast on Tuesday morning and was helping police with their inquiries.
Investigators have established that an incident had occurred in the early hours of Monday morning in the Arthur Lane area of Belfast.
The victim was admitted to hospital later that day.