The ground used by Borussia Dortmund was targeted by the bomber, who had three devices planted and all were defused by police.
The man detained was apparently a suspect in another incident involving a German company in 2010.
The ground used by Borussia Dortmund was targeted by the bomber, who had three devices planted and all were defused by police.
The man detained was apparently a suspect in another incident involving a German company in 2010.
