Three separate security alerts are under way in Londonderry – 48 hours after a bomb exploded in the city.
The area around the courthouse in Bishop Street has now reopened following an explosion in a car on Saturday night.
Prime Minister Theresa May has condemned the bombing in the Commons.
On Monday, the Army was called to two security alerts in the city involving reported hijackings.
Army bomb disposal officers carried out a controlled explosion in Creggan’s Circular Road after a vehicle was hijacked by three masked men at 11:30 GMT on Monday.
A security cordon has been reduced in the area to allow some residents who had been moved from their homes to return.
A second alert on Southway, also in Creggan, followed reports of a vehicle being hijacked by four masked men at 13:45 GMT.
In a third incident, the police are responding to a report of an abandoned vehicle on the Northland Road close to the Glenbank Road junction.
Saturday’s bomb exploded outside the city’s courthouse on Bishop Street shortly after a pizza delivery vehicle was hijacked at gun point.
A CCTV clip posted on Twitter by police showed a group of seven young people walking past the vehicle shortly before the blast.
Addressing MPs in the Commons on Monday afternoon, Mrs May said: “This house stands together with the people of Northern Ireland in ensuring that we never go back to the violence and terror of the past.”
Monday’s security alerts are still continuing.
PSNI Supt Gordon McCalmont said police are currently “in the process of implementing a public safety operation, establishing cordons and evacuating a number of homes” in Derry’s Creggan area.
“Sadly, within two hours today, we are dealing with a second security alert in the city, which means even more disruption for the local community.”
Supt McCalmont added: “This second security alert and the measures we are taking to keep people safe will cause significant inconvenience for the local community, but we have no choice.”
DUP leader Arlene Foster tweeted that the PSNI “needs our full support to remove those responsible from our streets”.
Sinn Féin councillor Kevin Campbell said there can be “no justification for this type of reckless activity”.
“Those responsible for this disruption have shown complete disregard for the people of Creggan, particularly elderly people who live in this area,” he said.
A community centre in Central Drive has been made available to people who have been affected.
It follows continued disruption around the scene of Saturday’s bomb outside Bishop Street Courthouse.
The PSNI said Saturday’s attack may have been carried out by the New IRA, a dissident republican group.
On Monday, police arrested a fifth man in connection with the bombing.
The 50-year-old man has also been arrested in connection with an armed robbery in the Meadowbank Avenue area of the city last Tuesday.
Four other men, two in their 20s and two others, one aged 32 and one aged 42, remain in police custody.
At the courthouse, scheduled jury trials have been put off until Wednesday.
Cases listed to be heard in the magistrate’s courts are being held in Strabane, with some other hearings switching to Coleraine.
Police say Bishop Street has been reopened after an investigation of the scene was completed.
They thanked “the patience of all those impacted” by the cordon.
Driver ‘threatened and intimidated’
PSNI Supt Gordon McCalmont told BBC Radio Foyle the police were trying to get the city back to normal and show the attack had “little or no long-term impact”.
He said the PSNI was “lucky we are not talking about loss of life”.
Supt McCalmont also said the pizza delivery driver whose vehicle was hijacked and used in Saturday’s bombing “had to go through the drama of having a firearm put to his head”.
“He was threatened and intimidated. It would be fair to say he was asked not to raise the alarm.”
What is the New IRA?
- The New IRA was formed in 2012 after a number of dissident republican organisations said they were unifying under one leadership
- It is believed to be the largest dissident republican organisation
- The group is believed to have been responsible for a number of attacks since its formation, including the murders of prison officers David Black and Adrian Ismay.
He added: “These groupings obviously want us to respond. We will be very balanced. This threat has always been in this city.
“My sense is that this is not because of Brexit.”