Police said a woman and her male companion, none of them identified, died after a bike was knocked down by a bus travelling on Srirampore-Bisarpur route at Mansatala area of Uluberia.
The bus driver was arrested and the vehicle impounded.
In a similar mishap, one motorcyclist was killed and two others were seriously injured when an unidentified vehicle rammed into the two-wheeler at Fakirpara in Uluberia area on the same day, police said.
The two injured were hospitalised.
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