The British Transport Police has released this statement after a man was hit by a train this afternoon:
There are no trains to and from Marylebone until further notice. Police are investigating after someone was hit by a train.
The incident involving Katherine Blair is being linked with another attempted robbery nearby half-an-hour earlier. Met Police say: "On both occasions a firearm was seen but not used - no shots were fired. "None of the victims were injured and nothing was stolen during the incidents."
The first incident happened in Boston Place at 8pm involving a female victim and a male suspect.
Tony Blair's daughter was held up at gunpoint by two men during an attempted robbery on Monday evening.
Kathryn Blair, 25, was not hurt in the incident as she walked down a central London street with her boyfriend and a group of friends.
Scotland Yard confirmed an incident involving two male suspects with a gun took place in Ivor Place, Marylebone, at 8.30pm on Monday night.
The Blair family were seen at the wedding of Euan Blair last weekend.
Londoners are warned all the time to beware of thieves who target expensive mobiles, tablets and laptops - and these men found out to their cost exactly why.
Enjoying a meal outside in Marylebone, they became a victim of an audacious snatch and grab.
A man in motorcycle gear walked calmly up to their table, and lifted a laptop from under their noses. They attempted to give chase, but the thief speed off on a motor scooter with a nearby accomplice.
CCTV from the L'autre Pied restaurant shows just how quickly the theft happened.
A woman is being treated in hospital for burns, after a fire in a car park in Marylebone Road yesterday evening.
Six fire engines and around 30 firefighters were called out to tackle the blaze and around 150 people were evacuated from nearby buildings.
One lane blocked and delays due to accident on A501 Marylebone Road Westbound at Harley Street, congestion to A400 Tottenham Court Road (Euston Underpass).
There are delays of up to 20 minutes on Chiltern Railway between High Wycombe and Marylebone due to an earlier signalling problem at Denham.