A WOUNDED man boarded a Tube train and travelled one stop after being shot, police believe.
The 27-year-old was found on the platform at Willesden Junction rail station at just after 2pm this afternoon suffering from suspect gun shot wounds to the back.
However, officers believe he may have been shot at Harlesden Tube station.
British Transport Police (BTP) are investigating and are currently at both stations.
The injured man was taken to hospital with injuries not thought to be life-threatening or life-changing.
A BTP spokesman said: "Officers are working to establish the full circumstances surrounding the incident, including how the man came to be injured."
London Overground and London Underground services in the area may be affected by this incident and passengers are advised to check the Transport for London travel website before travelling.
Anyone with any information should contact BTP on Freefone 0800 40 50 40 and quote incident 296 of 09/03