LUCKNOW, Aug. 4 -- Three unidentified people have been booked after a group of men, who claimed to be a part of the Kanwar Yatra, allegedly ransacked and pelted stones at a private school van, carrying seven children in Lucknow on Monday, police said. According to police, the incident took place at the Chowk area after an argument over a minor collision between the van and the men on a bike. Police, however, did not officially mention if the accused were kanwariyas despite witnesses' allegations. Police registered the FIR after videos on social media showed that broken window glass of the school van and schoolgirls standing on the street, and parents approached them. Lucknow's deputy commissioner of police (West) Kamlesh Dixit said the three people had escaped by the time police reached the site....