The damage seems to have been carried out by rival supporters as one could read Örebro SK and Ultras Örebro on what was scrawled both inside and outside Stora Valla.
On Tuesday night, Degerfors IF and Örebro SK meet in the first Allsvenskan derby in 24 years and the atmosphere has been whipped up among the supporters during the week, before it was now taken a step further.
- There are no ordinary supporters of Örebro who have done this, says Suzanne Hällström.
Degerfors IF gathered strength with the help of the pensioner pool, the supporter group Vulkanerna and sponsors on Tuesday morning to cover and wash away the graffiti.
See the graffiti and hear more from the club manager in the video above.