A person has died on the tracks at Wembley Stadium railway station.
British Transport Police officers were called to the station shortly before 8am on Tuesday.
The person was pronounced dead at the scene and officers are now working to identify the individual and inform their family.
The incident is not being treated as suspicious.
Chiltern Railways said in a tweet earlier on Tuesday that emergency services were "dealing with an incident between London Marylebone and Wembley".
"All lines are currently blocked," the operator said.
