A case has been registered against four unidentified persons in connection with the incident which occurred yesterday evening, SSP Gulab Singh said.
The two girls were returning home from a field when an ambulance coming from Anoopshahr stopped near them, and four men started pulling Yashoda into the vehicle, the SSP said.
Her friend Sunita immediately raised an alarm, Singh said.
Hearing the screams for help, villagers rushed to the scene, following which three abductors fled, leaving the ambulance behind, he said.
One of the kidnappers was grabbed by the villagers, he said.
Irate villagers protested near the Bhimpur police station demanding immediate arrest of the accused, he said.