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.
Thousands of items which have been left on the Metro over the years are to be sold at auction, with the proceeds going to charity.
The Metro Lost Property Auction will take place at Park Lane Interchange in Sunderland on Thursday (June 19).
There are over 4,000 items including a pair of boxing gloves, a pogo stick and a set of bunk bed ladders.
The proceeds are being donated to Age UK Sunderland, Action on Dementia Sunderland and NSPCC Childline Sunderland.
Director General of Nexus, Bernard Garner, said: “It’s been five years since the last Metro lost property auction took place so we’ve got a real treasure trove of lost property.
“It really is amazing what passengers lose on the Metro, from the mundane everyday times, to the more weird and wonderful.
"All proceeds from the auction will be donated to charity, like in previous years.”
The police have released CCTV images of a man they want to speak to about the theft of a bag from a Metro at South Hylton. It happened shortly after 11.50am on Wednesday 23 April.
The victim, a 49-year-old woman from Gateshead, had been travelling on the Metro. She alighted the train at Park Lane station and left her canvas shopping bag on the train. It had an iPhone 4 and other personal items inside.
PC Nick Cannon said: “Officers have since carried out a number of enquiries and have managed to isolate images of a man they would like to speak to about the incident… I believe the man captured on CCTV has key information about the theft and I urge anyone who recognises him to give us a call.”
Members of the public can contact British Transport Police on 0800 40 50 40.
Police in North Tyneside will work with Metro staff to crack down on shoplifters travelling around the area.
Anyone acting suspiciously could be stopped and questioned by extra teams in North Shields, Whitley Bay, Wallsend and Killingworth.
Delays of about 20-25 mins between South Shields and Pelaw due to an earlier failed train.
A woman hit by a Metro train remains in hospital.
The 44-year-old, who hasn't been formally identified, suffered serious injuries at Byker Metro Station in Newcastle at around 5.17 on Wednesday.
Police do not believe anyone else was involved.
A spokesman said enquiries are ongoing into the incident. Anyone with any information should call Northumbria Police on 101 extension 69191
A taxi driver has escaped unhurt after his car was hit by a Metro train at an unmanned level crossing. It happened on 2nd September at Callerton Parkway station near Newcastle airport.
The Tyne & Wear Metro line is fully open again, a day later than planned. The service had been closed for an upgrade through parts of Newcastle and North Tyneside for almost a month.
Trains were due to return to normal yesterday, but signal faults meant part of the service had to be suspended.
A spokesman has confirmed that the Tyne and Wear Metro line between Haymarket, Regent Centre and Four Lane Ends did not reopen as planned this morning because of signal faults detected by tests overnight.
The rest of the line is running normally, including between Regent Centre and Newcastle Airport. The spokesman said there was no problem with the upgraded track. The issues should be resolved soon.