A 39-year-old man has been arrested in connection with the the murder of Simon Tang in Carrickfergus, Co Antrim, in 1996.
Detectives arrested the man in Carrickfergus today as part of the renewed investigation.
He has been taken to the serious crime suite at Antrim police station for questioning.
Mr Tang, 28, died after he was attacked and robbed outside his takeway business in Carrickfergus in June 1996.
Five people, three men and two women, have been charged with offences linked to the murder in the past number of months.
Mr Tang was an Oxford University graduate, but instead of pursuing a career in architecture he took over the family business