The victim has also accused an SHO of extorting money during the detention, but police have rejected all accusations.
Eight eunuchs allegedly beat a constable Bhanwar Singh after he denied entry of their two autorickshaws into crowded Dargah market on June 4, police said.
They (eunuchs) were arrested and kept under detention in the night. They were later remanded to judicial custody by a court and were granted bail by a court on June 9.
An FIR against the SHO, one ASI and two constables was lodged yesterday, SP Ajmer Mahendra Singh said.
Medical examination of the eunuch was conducted and she has been called again tomorrow, he said.
"Primary investigation suggests that no such incident took place in the police station where there were five female police personnel present on the night of June 4. However, the matter is being investigated," he said.