$ 0 0 Aam Aadmi Party (AAP) leader Arvind Kejriwal was sworn-in as the seventh chief minister of Delhi at noon on December 28, 2013 by Lt. Governor Najeeb Jung. Along with Kejriwal, six other AAP MLAs were also administered oath of office and secrecy. The swearing-in ceremony was witnessed by tens of thousands of people, a majority of them AAP supporters, who cheered boisterously as the oath was taken. They also waved coloured baloons and the tricolour. Earlier, Kejriwal and AAP MLAs reached the venue of the formal swearing-in ceremony at Delhi's Ram Lila Ground on the Delhi Metro. Kejriwal becomes Delhi's youngest chief minister today at age 45. After the oath-taking ceremony, Kejriwal and AAP legislators will hold their first cabinet meeting. They are expected to work on Sunday as well. He has been asked to prove his majority in the state assembly by January 3. His first big challenge is grappling with a 10 per cent hike in CNG prices, announced on Thursday. Auto drivers in the city, who form a huge section of his supporters, have threatened a strike. Kejriwal said yesterday he will see if the hike can be reversed. If that's not feasible, he said, auto fares are likely to increase. The former Indian Revenue Service official has promised to disassemble Delhi's VIP culture. Neither he, nor other AAP lawmakers will use the flashing red lights that give politicians' cars the right of way on roads. They have also refused large government bungalows and say they want small flats as their official accommodation. It was those principles and a declaration of war against corruption that gave AAP 28 seats and a second place finish in the December 4 election. The BJP and allies got the most - 32, while the Congress finished third with just eight seats.