There has been a controlled explosion following the discovery of a World War Two bomb, in Newtownards, County Down.
The 500kg (1,100lb) air-dropped SC-500 German bomb was found at a building site at the Rivenwood housing development last Thursday.
Four hundred nearby homes were evacuated on Saturday with residents told they could be out of their homes for five days.
Military experts had worked to reduce any damage from dealing with the bomb by constructing a sand-filled structure around it.
The controlled explosion took place at about 15:38 BST, police said.
“The munition found, which I can now confirm was identified as being an air-dropped SC-500 German bomb from World War Two, was understood to have been in and around 83-years-old, but still posed a significant risk to public safety, even after all this time," Supt Johnston McDowell said.
Belfast and its surroundings were heavily bombed by Germany in 1941.
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World War Two munitions are found across Northern Ireland from time to time, but they rarely cause this level of disruption to people living nearby.
Supt McDowell added this was a "highly complex operation" with a disposal team comprised of members of the Army's 321 EOD and search squadron.
"They were also assisted by other emergency services and partners, who all provided expert knowledge in managing the high-risk emergency situation," he added.
James Fraser, the developer of the site, told the BBC that the Army had informed him that some solar panels had been damaged on the nearby homes, but no windows were broken.
Earlier, the Police Service of Northern Ireland said the device was to be "dealt with on site".
Police said the decision followed discussions at great length about whether the device should be removed.
On Saturday evening police said that the operation to neutralise the bomb, which has now entered its third day, could take "five or more days to complete".
Following the controlled explosion, Supt McDowell said police "endeavour to enable residents to return to normality as soon possible" with a further update to be provided in due course.
“The operation continues until we reach the completion phase. Thank you again for your continued cooperation at this time," he added,