In a recent development in the transport infra sector, the Urban Development ministry has approved the extension of the proposed Aerocity, Tughlaqabad and Defence Colony-Saket metro lines up to Jaitpur and IGNOU, respectively, MP Ramesh Bidhuri said in a recent statement with Urban Development Minister Venkaiah Naidu. Mr Bidhuri raised the demand of the metro’s fourth phase lines, besides complaining against delay in execution of work on the proposed lines. Shortly after that, the minister directed the officers that the work on the IV phase of Delhi Metro should be expedited and the approval for the extension of the two lines to be forwarded to the Delhi government. The Delhi government had already approved the fourth phase of Delhi metro comprising six lines in July last year and the work is scheduled to start in the current year and expected to be completed in three years, he revealed.