Paris St-Germain came out on top in a nine-goal thriller against Bayern Munich at the Parc des Princes to take a slim advantage in their Champions League semi-final.

Five goals were scored in a breathless first half before the mayhem continued in the second period when holders PSG began to pull away, opening up a three-goal lead.

But Bayern, already crowned Bundesliga champions and pushing for a Treble, cut the deficit to one to set up a scintillating second leg in Munich.

As the two top-scoring sides in the competition this year, it was only fitting that the buoyant crowd were treated to such an impressive display of attacking talent in a high-quality encounter.

Having fallen behind to Harry Kane's penalty after Luis Diaz drew a foul from William Pacho, PSG showcased their threat to take the lead.

Khvicha Kvaratskhelia picked up the ball on the left-hand side and cut onto his right foot to superbly guide a shot into the bottom far corner before Joao Neves' glancing header gave the holders the lead.

But a moment of individual brilliance from Michael Olise, jinking past players before hammering the ball beyond Matvey Safonov, put the visitors back on level terms.

It seemed a blistering first half would be level at the break but PSG were awarded a controversial penalty in the fifth minute of stoppage time when Alphonso Davies was deemed to have handled the ball in the box.

Referee Sandro Scharer was sent to the monitor and subsequently awarded what appeared to be a harsh spot-kick, the ball bouncing off Davies' leg and onto his arm before Ousmane Dembele coolly converted.

Bayern returned from the break determined to at least restore parity but were, at times, naive as the French side took control.

Kvaratskhelia converted from Achraf Hakimi's dangerous ball before Dembele netted his second at the near post to give the hosts a three-goal cushion.

Dayot Upamecano's flicked finish six minutes later was greeted only as a consolation but Diaz's finish into the far corner from Kane's brilliant pass ensured Bayern are still in the tie with the return leg taking place on Wednesday, 6 May.

The winners will face Arsenal or Atletico Madrid, who play in Wednesday's semi-final, in the final in Budapest.

PSG have scored more than two goals in each of their past nine Champions League knockout games - the longest run in the competition's history.

But while they managed four without reply against Liverpool across their two quarter-final legs, even five goals against Bayern leaves the tie poised.

In a match full of fascinating battles, it was a stunning attacking display from PSG's formidable front three of Dembele, Kvaratskhelia and Desire Doue.

In an end-to-end encounter PSG, who are aiming to become one of two sides - after Real Madrid - to win back-to-back Champions League titles, were ruthless and capitalised on a Bayern side willing to take big risks to reap big rewards.

After an even but blistering first half, after which PSG led thanks to a favourable video assistant referee decision, Bayern threw bodies forward but left themselves vulnerable and the French side punished them.

Kvaratskhelia was the driving force in attack and now has 20 goal involvements (13 goals and seven assists) in the Champions League since joining PSG in January 2025 - more than any other player in that time period.

France winger Dembele was a constant threat and has now recorded the joint-most knockout stage goal involvements for PSG in the Champions League - 10 goals and seven assists.

But for all their pressing, quality and high-tempo attacking play, the reigning champions appeared somewhat stunned that Bayern had somehow managed to get back into the tie and know a one-goal advantage may not be enough with the return leg away from home.

Bayern have already played their part in two thrilling European matches this season with their two quarter-final matches against Real Madrid also dripping in drama and quality.

In Paris, they once again found themselves involved in a match that many will pinpoint as one of the most entertaining and high-quality in recent memory.

Having wrapped up the domestic league title nine days ago, Bayern are aiming to win a first Champions League title since 2020 while they are also in the final of the German Cup as they pursue a coveted Treble.

When PSG struck twice in six second-half minutes it looked as though Bayern may be down and out.

They had left themselves open to PSG's fearsome attacking trio and paid the price.

But the visitors showed remarkable resilience to come back against a PSG side who perhaps became a little complacent.

What's more, they will feel confident in their own intimidating front three of Kane, Olise and Diaz, who have now scored more than 100 goals between them across all competitions this season.

PSG face Lorient in Ligue 1 on Saturday 2 May (16:00 BST) before travelling to Munich for Wednesday 6 May's return Champions League leg.

Bayern also play on Saturday (14:00 BST), hosting Heidenheim in the Bundesliga.

Watch highlights of every Champions League game from 22:00 on Wednesday on BBC iPlayer and the BBC Sport website and app.

There will also be a Champions League Match of the Day on BBC One on Wednesday, from 22:40 to 00:00.