Acting on a tip-off, the team rushed to the venue and stopped the wedding yesterday, he said.
The girl's family tried to mislead the officials when they asked them to provide the proof of her age, the official said, adding the original document was later provided when police threatened to lodge a case against them.
The girl was found to be of 14 and the groom was of 21, he said.
Both the families have given written apology that they will follow the laws and will not marry the girl before she reaches to the marriageable age, police said.