Five people were today being questioned by police about the death of a man in an attack in Derry.
An investigation was launched after a man in his 40s died in hospital a few hours after being assaulted at a house in Clooney Terrace in the Waterside area city.
A police spokesman said three men and two women were being questioned about the death.
Meanwhile people were injured in Co Down when a gang stormed a house and attacked revellers at a party.
Around 16 people were in the house at Reilly Street in Banbridge when it was attacked shortly before 4am, said police.
Eight people armed with clubs burst into the house by both the front and back doors and set upon the occupants.
A group of 10 of the occupants, aged from the 20s to 40s and which included three women, were injured and taken to hospital. One of the injured suffered serious head and back injuries, another serious facial injuries and three serious head injuries.
The injured were being treated in the Daisy Hill Hospital in Newry and Craigavon Hospital.
Five children who were in the house escaped injury.
A Police Service spokesman said the attack on the house was believed to be connected with at altercation at Scarva Street in Banbridge some hours before.