A man was arrested inRajgarh district of Madhya Pradesh on Saturday for allegedly raping a nine-year-old girl, police said.Indar Singh Tanwar (23) lured the girl by offering her Rs 100 when she was on her way to the fields and allegedly raped her behind a tree on Friday, said a police officer.Kotwali police station in-charge D P Lohia said the girl told her family members about the incident after returning home, and a complaint was filed.Tanwar was arrested under IPC section 376 (rape) and relevant provisions of the Protection of Children from Sexual Offenses Act and further probe was on, he said.