Dortmund defender Marc Bartra was taken to hospital for a hand injury after three explosions went off at the Dortmund team bus at just after 6pm on Tuesday.
A decision was taken at 7:30pm to postpone the match until Wednesday, when it will be replayed at 5:45pm UK time.
And with Monaco supporters facing an unexpected extra night in the German city, Dortmund helped to publicise a scheme to find them accommodation.
Monaco also alerted their fans to the scheme, as well as saying they would reimburse fans up to the value of €80.
Lots of people responded to the Dortmund tweet, hoping to help out those who had travelled from the south of France.
Read the full article on eurosport.co.uk: Dortmund residents offer spare beds to Monaco fans