NASHIK: A senior Army officer has been booked for allegedly raping a mentally challenged woman here, police said on Saturday. Colonel Vinod Sahani has been booked for allegedly raping the 21-year-old mentally-challenged woman on April 30, who stayed in his neighbourhood, Devlali Camp police station assistant sub-inspector Atul Zende said.According to complaint filed by the girl's family, the senior army officer lured the girl to his house and later raped her, the officer said, adding, the victim's parents lodged the complaint on Friday.An FIR has been registered against the officer but he has not been arrested yet.The accused and the victim were sent to Nashik civil hospital for medical examination and further investigations were under way, police added.