A spate of deaths at railway stations in the Harrow area have been probed during a series of public hearings.
Four of the five - all men - were killed when they were struck by trains between January and the end of April.
The other, the only female, fell from a bridge.
Their deaths have been the subject of inquests at Hornsey Coroners' Court held over the past two months, presided over by Andrew Walker, the coroner for Greater London.
A court official said Mr Walker did not comment on groups of cases, because each had been dealt with individually.
But the Observer under-stands the British Transport Police detectives who investigated the deaths do not believe there is a trend, or a link between them, and think it is down to chance that so many deaths occurred so close together.
Brian Instrell, 66, of John Perrin Place, Harrow, was hit by a train close to Kenton Station on February 7 and died of multiple injuries.
Jurors sitting at the inquest into Mr Instrell's death last Wednesday returned an open verdict.
The same day, Mr Walker adjourned an inquest into the death of Nuno Fernandes for further investigation.
The 19 year old suffered a fatal head injury when he was hit by a train at Kensal Rise station two days after Mr Instrell.
Thomas Moore, 36, from Harrow, died on March 18 at Harrow and Wealdstone station and, at the inquest into his death last Friday, the jury again returned an open verdict.
Stanmore man Tahir Mah-mood, 45, was killed on March 26, and another open verdict was returned at the inquest into the Brockhurst Close resident's death.
Amanjot Gil, 35, of Graham Road, Harrow, fell from a bridge at Harrow and Weald-stone station at 5.40pm on March 29.
He died two hours later at Northwick Park Hospital in Watford Road, Harrow.
The jury, which heard the inquest last month recorded a narrative verdict, which does not attribute cause of death.