A 47-year-old man died in what police described as a vicious attack.
The victim, who was in a critical condition in hospital, died from his injuries.
Police arrested a 30-year-old man in connection with the serious assault, following the attack in the Dromore Street area of Ballynahinch.
Detectives in Downpatrick are quizzing him about the attack which was reported at around 12.45am.
At least ten police officers have been hurt in trouble connected to a parade in North Belfast.
Violence broke out before a republican procession which drew loyalist protesters.
Missiles including stones and bottles were hurled at police.
Tensions have been brewing recently over problems near a Catholic church close to the parade.
Ulster Bank customers hit by a month-long IT meltdown which crippled the bank will be offered the following compensation:
- A one-off 25 euro (just under £20) payment for customers.
- Free banking for three months with Ulster Bank promising to waive certain fees, charges and surcharge interest.
- The compensation package will be worth at least 35 million euros (just under £28m).
Ulster Bank has announced details of compensation package for customers affected by the bank's "technical incident".
The bank will issue a one-off payment of £20 to Personal current account customers who visited and transacted at branch.
Jim Brown, chief executive of Ulster Bank, said £28m was being set aside at Group level for costs arising from the technical glitch.
Almost 400 students have had their places at the University of Ulster withdrawn after emails of acceptance were accidentally sent to too many applicants.
The student were told they had unconditional offers for the School of Engineering when in fact there were not enough places for them.