Thousands of people across Northern Ireland have observed a two-minute silence in memory of those killed in the London suicide bombings.
People stand in silence in the centre of Belfast
One week on from the atrocity, about 2,000 people took part in the silence outside Belfast City Hall at 1200 BST.
The tribute was led by Lord Mayor Wallace Browne. Prayers were also said during the 15 minute ceremony.
The three Tube bombs and one bus explosion killed at least 52 people in London last Thursday.
Before the ceremony, the lord mayor told those gathered "there are no words to describe the horror and revulsion of this barbaric act".
Small groups of people also gathered at the Diamond in Enniskillen to observe the silence at midday.
Ciaran Cassidy, whose mother was originally from the County Fermanagh town, was one of those killed when a bomb exploded on the Russell Square underground train.
In Londonderry, about 100 people paused to pay their respects at the Guildhall, with traffic stopping in Shipquay Place.
Councils throughout Northern Ireland also held their own ceremonies to remember those who died.
The silence was also observed by passengers and staff at trains and bus stations across Northern Ireland.
Afterwards, Translink chief executive Keith Moffett said he felt it was important as a transport provider to allow staff and passengers "who had much empathy with Londoners" to pay tribute.
Dr Jamal Iweida of the Belfast Islamic Centre took part at the City Hall event.
Earlier, he said local Muslims had been saddened by the London atrocity and could not understand why it had happened.
"We would like to convey our condolences and our sympathy to victims the families and the friends of the victims," he said.
"It is a great atrocity what happened in London and to all the communities here a great shock."
A book of condolence reopened at 0830 BST at the City Hall.
People from Northern Ireland have already been extending sympathy to the families of the victims.
Politicians and church leaders condemned the bombings and messages of sympathy in various languages have been written into the two books of condolence opened last Friday in Belfast.