Green Park station closure

[futurix]

Does anyone know details of what happened at Green Park station on Sunday evening? (April 14th)
The station was closed around 9.30pm due to "staff assault" (I'm assuming it was actually "assault on staff"). It must have been something major if such a crucial station was closed.

[Tom]

Not necessarily. It could simply mean that following an assault the station is below the minimum number of familiarised staff required to remain open.

[nig]

station went below minimum numbers so had to close till another member of staff could be drafted in csa not seriously hurt though luckily