The incident occurred in a forest area near Tevakalam village under Sindhipadar Gram panchayat of Thuamul Rampur block yesterday when the victims were guarding the crops raised by them using shifting cultivation.
A woman, identified as Dahadi Parabhoi (65) and her two grand daughters died in the field in the bee attack, the sources said.
Parabhoi's son Sombaru and daughter-in-law Patmati have been admitted in Thuamul Rampur Community Health center in critical condition, doctors said adding that their condition was improving.