Users of the Tesco website and app are experiencing disruption following an “attempt to interfere” with the system, the retail giant has said.
The website and app have been hit with outages since yesterday morning, meaning customers cannot place orders.
Users are given an error message when they try to access the grocery side of the website or use the search bar to look up products.
Customers have also reported being unable to access and edit their orders.
It is unclear how widespread the issues are or how many customers have been impacted.
A Tesco spokesperson said: “Since yesterday, we’ve been experiencing disruption to our online grocery website and app.
“An attempt was made to interfere with our systems which has caused problems with the search function on the site.
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“We’re working hard to fully restore all services and apologise for the inconvenience.
“There is no reason to believe that this issue impacts customer data and we continue to take ongoing action to make sure all data stays safe.”
Tesco first referenced the issue on Saturday, saying there was an “issue” and that they were “working hard to get things back up and running”.
Sunday was the first time they mentioned a interference attempt as being behind the problem.