Army Technical Officers have carried out two controlled explosions in Creggan this afternoon.
The first controlled explosion took place just before 2:30pm.
A white transit van was hijacked near Circular Road shortly before 11:30am on Monday.
Police are now dealing with a second security alert in the Southway area of the city where a Royal Mail post van was hijacked and abandoned.
Superintendent Gordon McCalmont said: “Just before 1:45pm this afternoon, we received a report a delivery driver’s vehicle had been hijacked on Southway by four masked men, one of them who is reported to have had a gun. The two occupants in the van were ordered to drive the vehicle to the Lonemoor Road and leave it there.”
ATO have carried out a controlled explosion on the hijacked vehicle in the Circular Road area of Derry/Londonderry.
A number of homes remain evacuated and cordons remain.
We continue to ask the public for their patience, and thank them for their co-operation.— PSNI DC&S District (@PSNIDCSDistrict) January 21, 2019
Homes have been excavated in the vicinity.