Dortmund had remained undefeated at home since early March and had beaten Leverkusen 2-1 away in the Bundesliga last Saturday,

However, they were undone by sloppy defending that allowed the 20-year-old Maza to score in the 34th minute of their round of 16 match.

Leverkusen found the net again in the 62nd minute, but Martin Terrier's side-footed finish was disallowed for offside following a VAR check.

Still, they maintained their lead to advance to the quarter-finals.

Leverkusen are joined in the last eight by RB Leipzig who recovered from conceding an early penalty against FC Magdeburg to secure a comfortable 3-1 victory at home.

Fans remained silent during the first 12 minutes of both matches as part of ongoing protests against proposed changes to security regulations at German football games.

Christoph Baumgartner netted twice for Leipzig.

Earlier on Tuesday, Louis Oppie scored a low shot seven minutes before full time to give St Pauli a 2-1 away victory over Borussia Moenchengladbach in their cup match.

In the encounter between second-division teams, Hertha Berlin's 16-year-old Kennet Eichhorn became the youngest scorer in post-war German Cup history by adding the third goal in a 6-1 rout of Kaiserslautern.