"The girl was abducted by one Vijaypal and his nephew Chinku from Etwah area on June 1 and they took her to Nepal where they raped her for 20 days," said Superintendent of Police K K Chaudhary.
Later, Vijaypal and Chinku with the help of latter's father Takau and one Baransi tried to sell the girl to human traffickers.
However, the girl managed to escape and met the SP and narrated her ordeal.
A case was filed against all the four accused and Chinku and Vijaypal were arrested last night, he said.
The girl has been sent for medical examination and raids were being conducted at several locations to arrest the other two accused, the officer said.