"The father of the girl said that his mental condition was not good, therefore, he lodged the case," Sushma Kumawat, member of the state commission for women, told PTI.
However, she said, it could not be concluded whether the case was fake or genuine until the girl's statement was recorded.
The Commission also visited the victim's village and spoke to the locals and her family members.
Women and Child Development minister Anita Bhadel also questioned the delay in reporting the matter to the police.
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"Facts have emerged contrary to the allegations of the father, which in turn raise doubts," she told reporters, adding that the final report would make things clear.
Circle Officer Banwari Lal said the girl's statement will be recorded tomorrow.
The matter of the gang rape came to light on Friday last after the minor girl's father alleged that his daughter was raped by eight teachers of a private school. He also alleged that the accused made a video of the heinous act.
Before the rape FIR, one of the accused teachers had filed a case against four persons including two brothers of the girl on March 20 for allegedly thrashing him.
The state government has maintained that the case has many chinks.
Kataria had said that the case was lodged by the father of the girl as a counter to another case and the examination by the medical board will only verify the allegations.
"I cannot understand if eight people rape a girl and she does not inform the (family) the same day. However, the allegations are serious and we have formed the medical board and only after the medical examination, it will become clear," he had said.