Waterloo station has reopened after a security alert at the Eurostar terminal.
The station was evacuated when a man set off a security alarm at the passenger screening area around 12.15pm.
South West Trains said a suspect package had been found and the station was closed after a request from the British Transport Police.
A 32-year-old man from Twickenham has been detained by police under section 51 of the Criminal Law Act for possession of suspicious articles.
Services at the station came to a halt and trains entering Waterloo were at a standstill, held outside the station.
The station was reopened to passengers at 1.30pm.