Patna: A JD-U party legislator's son allegedly shot dead a class 12 student in Bihar's Gaya town for overtaking his car, police said on Sunday. Aditya Sachdeva, son of a businessman, was allegedly shot dead on late Saturday night by Rocky Yadav, son of JD-U MLC Manorma Devi and Bindi Yadav, a criminal turned politician. After a protest in Gaya over Aditya's killing, police have detained Bindi Yadav for interrogation, a district police official said. According to police, preliliminary investigation suggested that in a fit of rage, Rocky killed Aditya after a heated arguement for not giving side to his new Land Rover car. Police have also recovered Rocky's car from his parents' house.