India News: A 19-year-old boy was arrested from Bihar today for allegedly raping a five-year-old girl in Delhi which he described as a "big mistake", two days after the first accused, Manoj Kumar, was apprehended in the case.<br /><br />Pradeep Kumar (19) was nabbed from his maternal uncle's house in Barahiya village in Bihar's Lakhi Sarai by a joint police team from Delhi and Bihar and sent to transit remand for 15 days by a court there, police said.