BoyleOffers tweeted two bomb emojis just minutes after the reported explosion
The explosions are said to have occurred next to the Dortmund bus. On it were players travelling to their Champions League quarter-final clash with Monaco.
Minutes after the explosions, bookies BoyleSports tweeted two bomb emojis in an advert.
Alongside the emojis, the @BoyleOffers account wrote: “PRICE BOMB Borussia Dortmund (v Monaco) & Juventus (v Barcelona) both to score in the 1st half DOUBLED to 3/1.”
The post was made at 6.45pm tonight. One follower replied swiftly: “Better delete this pronto.”
Defender Marc Bartra has been cut by flying fragments of glass but he's not seriously injured.
The club say all their staff are okay and their game with Monaco has been cancelled.
The game will now be played tomorrow.
Dortmund swiftly released a statement which read: "There was an incident shortly after the BVB Team Bus left the hotel en route to the stadium.
"The bus was damaged in two places, while a person sustained injuries and was taken to hospital.
"We will provide you with more information as soon as we know more.”