TransPennine Express have issued a response after website users spotted a major Prince Philip error.
People visiting the train operator 's website on Thursday would have been greeted by the message: "We are saddened by the death of His Royal Highness The Duke of Edinburgh."
Prince Philip, 99, has spent 16 nights in hospital – his longest-ever stay.
Buckingham Palace said on Thursday morning that the Duke of Edinburgh had undergone a successful procedure for a pre-existing heart condition while being treated at St Bartholomew's Hospital.
They added that he would remain in hospital for treatment, rest and recuperation for a number of days.
TPE responded when asked on social media: "Why have you got on your website that the Duke of Edinburgh has passed away."
A message from the official account said in response: "Hi Paul, we are aware of this error on our website and we are working as quickly as possible to rectify this."
It appears the error took around 30 minutes to rectify.
Prince Philip was moved by ambulance to St Bartholomew's Hospital in the City of London on Monday for testing for a pre-existing heart condition and treatment for an infection.
He was initially admitted to the private King Edward VII's Hospital on February 16 as a precautionary measure after feeling unwell.
