The boat was on its way to Rampura village from Sontalai when it lost balance and overturned, Harda Collector Rajnish Shrivastava said.
So far bodies of two persons have been found while three others are missing and it is suspected that they too drowned in the incident.
The rescue operation has been stopped due to darkness and it will be launched again tomorrow with the help of National Disaster Response Force (NDRF) team, the collector said.