Royal Mail customers are being warned not to send items abroad "until further notice" after a cyber attack.
The postal giant said it continues to experience "severe service disruption" following the incident, but has not provided any further details on the issue.
A Royal Mail statement said: "To support faster recovery when our service is restored and to prevent a build-up of export items in our network, we're asking customers not to post international items until further notice. Items that have already been dispatched may be subject to delays."
READ MORE: DVLA warning as millions of driving licences to become invalid
The National Cyber Security Centre has said it's aware of the incident, the Mirror reports. The group first announced it had been affected by a cyber attack last week and said it was facing "severe service disruption" to its international export services.
The area affected by the cyber incident was the back office system which is used by Royal Mail to prepare mail for despatch abroad and to track and trace overseas items.
In its statement, Royal Mail said it was temporarily unable to despatch export items, including letters and parcels to overseas destinations. Last week, people were told to "avoid" posting any items abroad while the problem is tackled.
When Royal Mail reported the news, it described the issue as a "cyber-incident" rather than an attack as the group did not know what had caused the problem. It also said it had "immediately" launched an investigation into the incident and were working with its external partners.
Receive newsletters with the latest news, sport and what's on updates from the Liverpool ECHO by signing up here
READ NEXT:
UK travellers will have to pay to enter Europe from end of 2023
Martin Lewis issues 'heartbreaking' warning to anyone booking a holiday
Emmerdale viewers alarmed as they 'work out' 'creepy' Caleb Dingle twist
Martin Lewis bill warning to anyone living in a flat or three bed house
