The key leaders of the INDIA Bloc -- including Rahul and Priyanka Gandhi -- were detained as they led a massive protest over the voter list revision and demanded the dismissal of Chief Election Commissioner Gyanesh Kumar for the second consecutive day, Congress sources have claimed. Other protesters who were at the site were not spared either. The police were seen pushing them into waiting buses and driving off. Congress workers, however, punctured one of the tyres of the bus, the party said. Rahul Gandhi was later transferred to another bus and taken to a police station on Barakhamba road. He was released hours later. Along with the Gandhis, the other leaders detained -- KC Venugopal, Pawan Khera, AA Rahim and Sivadasan were released as well. Congress chief Mallikarjun Kharge has asked all MPs to stay back in Delhi, indicating there are plans to take the protest forward. The Opposition leaders are now moving towards Jantar Mantar, The police are blocking all approach roads to the 18th Century observatory.