Thomas Muller became the leading German scorer in the Champions League on Tuesday night and engaged in a raucous exchange with Bayern Munich supporters as Pep Guardiola's side celebrated a famous win. Muller, 25, netted the fourth goal of Bayern's 6-1 demolition of Porto in the second leg of the Champions League quarter-final at the Allianz Arena to secure their place in the last four. It was the World Cup winner's 27th Champions League goal, taking him past former Bayern team-mate Mario Gomez and making him the highest-scoring German since the tournament took its current shape in 1992. Thomas Muller leads the celebrations with Bayern Munich supporters after the Champions League win . The Germany international uses a megaphone to stir up the fans that remained after the final whistle . Supporters responded to Muller's chants as they celebrated the win against Porto on Tuesday night . Muller lets out a cry as the supporters joined in behind him after Bayern Munich reached the last four . 1. Thomas Muller - 27 . 2. Mario Gomez - 26 . 3. Michael Ballack - 16 . 4. Miroslav Klose - 14 . 5. Carsten Jancker - 13 . It was a night to savour in Bavaria as the home side blitzed their Portuguese opposition, who had sprung a surprise in the first leg by inflicting a 3-1 defeat on the Bundesliga champions. But five first-half goals by Thiago Alcantara, Jerome Boateng, Robert Lewandowski (two) and Muller ensured Bayern's safe passage into the semi-final. And after the match the Bayern players remained on the pitch for some time as they celebrated with supporters behind the goal. As the squad lined up linking arms in the penalty area Muller scaled the fence to reach the first row of fans, and with a megaphone in hand stirred up a frenzy as he led the chants. The supporters followed before Muller climbed down to join the rest of the team as they danced on the pitch while fans sung in celebration. The supporters look down at Muller as he leads the celebrations after a convincing Bayern win . Muller scored his 27th goal in the Champions League during Bayern's 6-1 win at the Allianz Arena . The World Cup winner's deflected shot squirmed past the wrong-footed Fabiano in the Porto goal . After watching his side storm into the semi-final, Bayern boss Guardiola hailed his players for their first-half performance. 'It's easy to love my players now,' said Guardiola. 'I am the coach of extraordinary players. I didn't expect such a first half. 'We can still play better,' he added. 'We lost the ball here and there and we can improve on that. We had a few problems in the second half. 'They had only a few chances but you should never relax in the Champions League.'
Bayern Munich beat Porto 6-1 in the Champions League on Tuesday . Pep Guardiola's side progressed 7-4 on aggregate to reach semi-finals . Thomas Muller scored 27th Champions League goal to pass Mario Gomez . Muller is now the leading German scorer in the competition . After game Muller led the celebrations with supporters using a megaphone .