The incident took place last evening when the farmers Ikram [45] and his nephew Jabir Ali [34] were using the tubewell, Sub-Divisional Magistrate Suresh Mishra told reporters here today.
The bodies have been recovered, he said.
Meanwhile, two more farmers were killed in separate incidents here.
Bashir [40] got electrocuted when he came in contact with an electric wire in the fields at Madwara village here, police said.
An elderly man was killed after being hit by a train at the crossing level near Thana bhawan railway station.