How was the band poisoned in 'The Lure'

How was the band poisoned in 'The Lure' - Man in Crew Neck T-shirt Wearing Black Headphones

In the Polish film The Lure the 3 members of the band, after throwing the girls in the river, appear to have been poisoned and they are then revived by a blonde woman. Was it ever explained in the film how they were poisoned and by whom? And what was the meaning of this scene?

plot-explanation analysis the-lure

Pictures about "How was the band poisoned in 'The Lure'"

How was the band poisoned in 'The Lure' - Woman in Black Crop Top and Black Denim Shorts Holding Blue and White Labeled Bottle

How was the band poisoned in 'The Lure' - Woman in a Black Crop Top Singing

How was the band poisoned in 'The Lure' - Man Playing Electric Guitar on Stage

The Tragic Story Of Poison

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Images: Frederick Medina, RODNAE Productions, RODNAE Productions, Jonathan Cooper