Three explosion went off near German Borussia Dortmund football club's bus which was transporting the team to its stadium 'Signal Iduna Park' in Dortmund city, German police said. The team was set to play a Champions League quarterfinal match on Tuesday evening against Monaco, when the explosions occurred. The police added that a window on the bus was damaged and Spanish defender Marc Bartra of Dortmund was slightly injured. The German team officially postponed its match after the blast. Germany has been rocked by seven terror attacks in different parts of the country, which left 22 people dead and 112 others wounded since 2016. The Islamic State (IS) terrorist organization has claimed its responsibility for a number of these attacks, which have involved asylum seekers from Syria and Afghanistan.