A mother and daughter have been raped at gunpoint in front of the father of the family by a gang of 20 youths, police have said. The father, who is a doctor, is said to have been on his way home from his clinic with his wife and 15-year-old daughter on a motorbike when they were attacked in Gaya, in Bihar, India, on Wednesday. Woman shaves her legs on busy train platform They were surrounded by a gang of 20 youths who were armed and told them to get off the bike at around 8pm. The doctor tried to stop them assaulting his wife and daughter but he was quickly overpowered and tied to a tree, according to the Times of India. He was then made to watch as they took it in turns to rape the woman and the girl. MORE: WORLD New strain of bird flu could lead to global pandemic, experts fear Horrific moment woman is found inside 27ft python after going missing while gardening It’s ‘raining green crystals’ in Hawaii thanks to recent volcano eruption Eleven were arrested shortly after the incident with the other nine being detained the following day after villagers put up roadblocks. Police inspector general Nayyer Hasnain Khan said: ‘The three were passing through Sondiha on a motorcycle when they were waylaid by youths carrying firearms. ‘They raped the mother and the daughter after tying the father to a tree.’ He added that the gang of youths were behind a number of mobile phone and cash thefts from students in the village.