Monaco's Ligue 1 winning streak ends sharply after heavy loss against Paris FC
Facing top-half sides in four of their remaining six fixtures, Paris sought a solid opening to firm up their secure mid-table standing. They delivered precisely that, surging ahead by two goals in under eight minutes.
Monaco could not cope with Moses Simon's quickness along the left side, as he made use of the area to turn inwards and fire off a low delivery that Jonathan Ikoné slotted home from the far upright.
The away team had hardly recovered when they were exposed once more on the opposite flank, with Ikoné playing a key role again.
He combined neatly with Marshall Munetsi, releasing the Wolverhampton Wanderers loanee to cross for Ciro Immobile, who wasted no time in smashing in his second strike in consecutive outings.
Lukas Hradecky and Wout Faes teamed up to thwart Maxime Lopez and prevent Monaco slipping to a three-goal deficit following another Paris breakthrough, though this was merely a brief respite.
A couple of Kevin Trapp stops to repel Simon Adingra and Ansu Fati turned crucial as the home side mounted a rapid break that concluded with Immobile setting up Ikoné, enabling the forward to claim his brace in much the same manner as his opener.
Lopez then missed high, yet Sébastien Pocognoli's rattled squad eventually steadied and mounted some late pressure before half-time.
Folarin Balogun somehow blazed over from close range with the net gaping, but he soon found the target after Aladji Bamba teed him up, marking the first instance of a player netting in seven straight Ligue 1 games since Neymar in 2022.
The initiative swung towards Monaco, and Trapp turned away Fati's effort once more during added time in the first half, leaving the Paris forward possibly relieved by the break.
Antoine Kombouaré's charges reset and resumed their offensive approach after the interval, although they lacked sharpness, with multiple dangerous breaks fizzling out.
Bringing on Paul Pogba for his debut since December appeared to lift Monaco at first, but only two minutes on, they leaked another goal that sealed the match for their opponents.
Merely six minutes into his own sub appearance, Luca Koleosho unleashed a long-range shot that Hradecky could do nothing about as it clipped the bar's underside on its way in.
That strike capped Paris' most emphatic triumph of the campaign, widening their lead over the relegation places to 12 points and extending their unbeaten sequence to seven games.
For Monaco, it marked their initial Ligue 1 reversal since January, forfeiting a shot at the top three while this lacklustre showing prolonged their dismal record in Monday evening away league fixtures to just one victory in ten.