A man has died after falling off a ladder at Nexus Rail headquarters in Gosforth.
Metro services between Regent Centre and South Gosforth have been stopped because the incident, at around 2pm, happened close to the tracks.
The man has not yet been named.
Northumbria Police say inquiries are on-going and the Office of Rail Regulation has been told.
The Campaign for Better Transport has criticised the government's plan for a high-speed rail network between Manchester and Leeds as "bad news" for the North East of England.
Martin Abrams said the idea, suggested by George Osborne, would be a "double whammy" for people north of Leeds.
The North East Chamber of Commerce *(NECC) *has welcomed the Chancellor George Osborne's call for a new high-speed rail network between Manchester and Leeds, even though there was no suggestion of extending it to the North East.
The organisation, which represents businesses, said the plan was a "good start" but warned that the government should ensure it amounted to more than a just words.
“The Chancellor’s speech is good news and provides an indication that effort is being put into connecting the North of England. High speed rail will increase capacity and speed up our vital rail links and as such we welcome its development.
“The prospect of a high-speed east-west link across the North is a good start, but the North of the country does not stop at Leeds. This announcement must be part of a larger effort to create a full high speed northern rail network.
“The Chancellor’s ambition for a Northern ‘HS3’ is positive and this project could play a large part in strengthening and balancing growth across the whole of the country
“Of course we want to see a firm commitment from to include the North East in future plans for high speed rail, but for now the Government must ensure that the Chancellor’s words amount to more than just a political speech. They must form the basis of a regional strategy that has been missing in recent years.”
The Institute of Economic Affairs *(IEA) *has dismissed George Osborne's idea of a new high-speed rail network for the North, calling it a "costly vanity project".
“The relatively short distances between northern cities mean high-speed rail is an expensive and inefficient way of linking them. Because northern conurbations are spread out geographically and include numerous different towns, high-speed trains between the largest city centres would make little difference to door-to-door journey times for a high proportion of travellers.
“The Chancellor should focus on smaller-scale schemes that deliver high returns for the taxpayer or, better still, that can be financed privately, rather than concocting a headline-grabbing vanity project to attract votes.
“Not content with wasting tens of billions on the loss-making HS2 scheme, George Osborne is now threatening to compound the error by forcing taxpayers to fund HS3.”
Chancellor George Osborne has said the fastest growing economic activity right now is in the North-East.
Giving a keynote speech in Manchester, he said people were also joining the jobs market there at the fastest rate.
Despite being a Londoner, the MP, who represents Tatton in Cheshire, spoke of his love for the North.
Being a Londoner I am proud to represent a northern constituency.
I feel the buzz and the energy every time I’m here. And I see it too in the Treasury data."
A new high-speed rail connection and better roads could create an economic "powerhouse" in the north of England to rival the success of London, George Osborne said today.
The Chancellor is proposing the new transport link between Manchester and Leeds to connect a collection of northern cities, which if combined could 'take on the world.'
He said he was prepared to back it up with money in the sum of '£6 to 7billion.'
He said: "It's a vision of how you create better road and rail links across the Pennines.
"We are about to commit, later this year, many billions of pounds to investing in our economy to try to bring together a vision of how the north of England can have this northern powerhouse."
George Osborne has said there is a 'strong case' for more elected mayors to drive growth and development in northern cities and rival London Mayor Boris Johnson.
Speaking on BBC radio 4's Today programme the Chancellor said: "I think there is a strong case for elected mayors in places like Greater Manchester to make sure they have the same powers, the same clout, as the mayor of London does in our capital.
"I think it helps to have a single individual who is, of course, democratically accountable, but also bringing together powers over planning, housing and transport."
He added he wanted to bring together cities like Manchester, Leeds, Liverpool and Hull with new transport links.
George Osborne will say a collection of northern cities linked closer together by new transport infrastructure could "take on the world" as he bids to end London's "unhealthy" economic dominance.
The Chancellor will say in a keynote speech in Manchester today:
We need an ambitious plan to make the cities and towns here in this northern belt radically more connected from east to west - to create the equivalent of travelling around a single global city.
As well as fixing the roads, that means considering a new high speed rail link.
Today I want us to start thinking about whether to build a new high-speed rail connection east-west from Manchester to Leeds.
New railway plans proposed by Chancellor George Osborne mean commuters could soon travel from London to Manchester in just one hour.
In a speech in Manchester today Mr Osborne will say 'we must do more to connect our northern cities.'
The proposed line would be based on the existing rail route between the two cities "but speeded up with new tunnels and infrastructure" to create "a third high speed railway for Britain".
He will also propose a high-speed rail connection east-west from Manchester to Leeds.
A new high-speed rail connection and improved roads between England's northern cities could help create an economic powerhouse to rival London, George Osborne will say today.
He will use a keynote speech to say an upgraded, high-speed link between Manchester and Leeds should be considered as part of the review of the second phase of the HS2 project.
The Chancellor will say he wants travelling through towns and cities in the northern belt to be as easy as moving around a major global metropolis as part of a plan to help them "take on the world".
Under current plans the £50 billion HS2 high-speed rail project will link London to Birmingham in its first stage, before creating a Y-shaped network with lines to Manchester and Leeds by 2032/33.
But concerns about connectivity between the northern cities were raised in the report by HS2 Ltd's chairman Sir David Higgins earlier this year.