WATCH: Humiliation for Bayer Leverkusen as Arminia Bielefeld fans storm pitch after third-tier side knock holders out of German Cup semi-finals

Xabi Alonso's side were aiming to win the German Cup for the second year in a row and were the favourites to reach the final when they took on their lower league opposition.

The German champions got off to a solid start when Jonathan Tah opened the scoring after 17 minutes, but the home team were level just three minutes later and took the lead on the stroke of half-time. Leverkusen were unable to create any clear chances in the second half and instead it was Bielefeld who came close to making it 3-1 as Joel Grodowski was unable to find the net. After the full-time whistle, home fans stormed the pitch.

Leverkusen are set to end the season without a trophy, having already been knocked out of the Champions League by Bayern Munich. They are also six points behind Vincent Kompany's men in the Bundesliga.

With seven games to go, Leverkusen still have a chance of retaining their Bundesliga title but will need Bayern to suffer a monumental collapse in the late stages of the campaign.