British Transport Police say it happened overnight Monday (2nd July) into Tuesday (3rd July)
Images of 4 large tags spreading the length of at least 3 windows have now been released.
BTP Devon & Cornwall tweeted to say those responsible risked their lives trespassing on the railway and their actions could land them with an unlimited fine or up to 10 years in prison.
They're now looking for those who caused the damage.
Devon care home fined £200,000 after two residents drowned
Burdon Grange failed to provide safe care
Residents urged to help rough sleepers
Volunteers can join the soup run
City beat Argyle in Devon derby
Match Report: Exeter City 2-1 Plymouth Argyle
Parking in Devon could rise by up to 50 per cent
It should raise £4 million
Devon crime writer inspires new Mr Men books
Agatha Christie did like a twist!
Council wants NHS Nightingale centre pulled down
It was fine when it was a chicken shed
