The deceased were identified as Swapan Mia, 22, Ripon Mia, 26, sons of Hekim and Mukhles, 28, son of Korban Ali of the village.
They were catching fish in a beel in the area and fell asleep along the rail track while taking a break, said Mizanur Rahman, officer-in-charge of Barohatta Police Station.
The accident took place around 4am when a Mohonganj-bound inter-city train from Dhaka hit them, leaving them dead on the spot.
On information, police recovered the bodies and sent them to a local hospital morgue for autopsy.
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