Military experts have constructed a sand-filled structure around the device.
A suspected World War Two bomb found at a housing estate in Newtownards in County Down is to be "dealt with on site", police have said.
However, the Police Service of Northern Ireland has warned that there was "a risk of death or serious injury to anyone who does not leave the area".More than 400 householdsOn 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".
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