Dortmund police have said an officer is under investigation because of suspected "undue use of pepper spray" against Tottenham Hotspur supporters trying to enter the Westfalenstadion last Thursday.
Seventeen Spurs fans suffered irritation to their eyes after police used pepper spray outside the ground before the first leg of the teams' Europa League round-of-16 tie, which Dortmund won 3-0.
Dortmund police said in a press statement on the night of the match that spectators' late arrival at the ground...