Following the footsteps of the Congress-led government in Maharashtra, Delhi Chief Minister Sheila Dikshit has asked for a Central ordinance "on the lines of Ulhasnagar' to regularize illegal buildings in the Capital's residential colonies. The move comes even as the Delhi High Court is monitoring building by-law violations by top politicians of the city, including leaders of the Congress and BJP. Proposing an ordinance, Dikshit sent a letter to Union Urban Development Minister Jaipal Reddy and urged the Centre to take a decision at the earliest. Copies of the letter were also marked to Home Minister Shivraj Patil and Delhi's Lt Governor B L Joshi.