One of the three men who allegedly raped a young mother in an autorickshaw in Gurgaon after throwing her nine-month-old baby onto the road last week has been arrested after a massive hunt, the police said today. The man, identified as Yogender, has admitted to the crime, said Gurgaon police chief Sandeep Khirwar. His companions Jaykesh - the driver of the auto-rickshaw - and Amit, are still missing.