As the team bus made it's way to the Westfalenstadion, it was rocked by three explosions shortly after leaving the hotel.
There was superficial damage to the bus, and several people in the vicinity were injured, including a police officer.
The worst injuries befell Mark Bartra, the former Barcelona defender. Flying fragments of glass has lascerated his hand and the force of the blast broke his arm. He was immediately rushed to hospital.
Fans entering the stadium were quickly told that the game would be postponed in light of the events, and the rest of the Dortmund squad returned to their hotel.
Monaco held an impromptu training session inside the stadium while the fans who had arrived early displayed various signs of solidarity and friendship.
24 hours later, after a ludicrous decision from UEFA, the game was played. Dortmund struggled. In light of everything that had happened since the night before it was perhaps unsurprising that they lost 3-2 on the night, looking a shadow of their normal selves.
In the insuing investigation, an Iraqi man was arrested as the prime suspect, but his involvement was never proven. A week later, a man by the name of Sergej W was arrested and charged with attempted murder. It was classified as both pre-meditated and a terrorist attack.
It was disovered that the explosive devices were placed in bushes alongside the route which the bus would take, and remotely detonated. There was a fourth device that did not go off discovered alongside letters giving the motive for the attacks as revenge for German intervention in Syria.
Sergej W, a German with dual Russian citizenship, is still considered the prime suspect. It is thought he had been trying to manipulate the stock of the club, so that he could make money off the markets.