The Borussia Dortmund team bus was damaged and a passenger was injured after three explosions went off near the vehicle on the way to Tuesday's Champions League home game against Monaco, police confirmed.
"The bus set off" from the team's hotel to the stadium when "three explosive charges have detonated," said a spokesman, Gunnar Wortmann.
German daily Bild report Spanish defender Marc Bartra has been injured and taken to hospital.
The club announced at 20:30 local time (18:30 GMT) that the quarter-final match was postponed, and would be played on Wednesday.
