The 10-year old girl was sexually assaulted yesterday by the man, neighbour of her grandfather at Samuthiram village near Edapadi, after he took her to his house under some pretext.
Villagers, who rushed to the spot on hearing her screams, caught the man and handed him over to the police.
He was arrested under section 8 of Protection of Child from Sexual Offences (POCSO) Act and produced before a court which remanded him to 15 days judicial custody.
The girl has been admitted to a hospital for medical check up, police said.