Paris Saint-Germain beat Manchester City 4-2 at the Etihad Stadium on Wednesday. PSG scored three first-half goals.
3 first-half goals came from Desire Doue, Ousmane Dembele and Vitinha.
2 goals from Haaland followed Enzo Maresca's triple halftime substitution.
Maghnes Akliouche scored PSG's fourth after a save by Gianluigi Donnarumma.
Donnarumma saved a late penalty from former City player Ferran Torres.
Why it matters: The result came as City face possible sanctions over Premier League financial rules. An independent commission found the club guilty on more than 100 charges last month.
PSG are seeking a third consecutive European title.
City have now lost four of eight home Champions League matches.
PSG Beat Man City 4-2 in Champions LeagueYou are hereLatest
How 9 sources split on this story
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Coverage by lean% of 9 sources
9 sources · 15 articles · 34% Left coverage
Where they split: Outlets differ on emphasis: City's fight back and Haaland's record, or PSG's first-half dominance as proof City are not close to Europe's best.
Center coverage, 3 sources: The center treats the win as evidence PSG may be building a historic European dynasty.
