Dembele opened the scoring after just 12 minutes and added a second before half‑time as PSG delivered a real statement of intent going into the crucial months of the season.

Facundo Medina's own goal made it 3-0 just past the hour before substitutes Khvicha Kvaratskhelia and Lee Kang-in got in on the act as PSG avenged their 1-0 defeat at the Velodrome earlier this campaign.

Luis Enrique's side have now won seven straight league matches, though they remain under pressure from surprise challengers Lens, who briefly moved top on Saturday and sit just two points behind.

PSG surged in front as Desire Doue released Nuno Mendes with a superb ball down the left and the Portuguese wing-back squared for Dembele to slot past Marseille goalkeeper Jeffrey de Lange.

Matfei Safonov, again chosen ahead of Lucas Chevalier in the PSG goal, denied Amine Gouiri as the Marseille striker stabbed a cross goalwards, but the hosts -- with a rare full week since their last game -- looked fresh and threatened regularly.

De Lange made a good save to turn away Doue's angled low drive but Dembele, who has struggled to consistently replicate last season's Ballon d'Or form due to injury, produced more magic as he got away from Balerdi, saw off Medina and rifled in PSG's second on 37 minutes.

After two closely-fought encounters this season, with PSG winning the Champions Trophy on penalties last month after a 2-2 draw in Kuwait, Marseille offered virtually nothing in the French capital.

Doue grazed the post but it was only a matter of time until PSG stretched their lead, Medina inadvertently heading past his own 'keeper on 64 minutes when trying to intercept a lofted ball intended for Kvaratskhelia.

The Georgia winger, just on as a substitute on his return from an ankle injury, bagged PSG's fourth with a sublime volley from Dembele's looping pass.

Lee also scored after coming off the bench as he drilled low past De Lange at his near post to complete a brilliant night for PSG.

It almost got even worse for Marseille as both Kvaratskhelia and Mendes hit the bar late on, but the brutal nature of this defeat will not sit well at a club still stinging from an excruciating Champions League exit barely a week ago.