BBC News, North East and Cumbria
A Grade II listed museum building has been targeted with graffiti, prompting fears of more vandalism in the area.
Michael Ganley, the director of the Fans Museum Sunderland, based in the city's former Monkwearmouth station, worries it is "a matter of time" before the antisocial behaviour goes further.
Network Rail, which owns the building, said it would look into the incident and visit the site to assess the graffiti.
Sunderland City Council said it was "sad" to see the building had been targeted.