Sanofar (35) was arrested after neighbours complained of the cruelty to which girl had been frequently subjected to by her father.
According to police, on interrogation, the girl's mother admitted that her husband used to frequently beat the child.
The girl has suffered injuries all over her body including a deep cut near one of the eyes, sources said.
She was first taken to the District Hospital here but later shifted to Medical College Hospital in Thiruvananthapuram as doctors suspected internal injuries.
