RJD chief Lalu Prasad Yadav's son and Janshakti Janata Dal's Tej Pratap Yadav has been booked for violating the model code of conduct (MCC) in Bihar's Vaishali, police said. This comes after a viral video showed him using an SUV with a police logo and beacon light during his nomination procession. The 37-year-old is contesting from the Mahua Assembly constituency.