The Enforcement Directorate (ED) on Tuesday summoned senior Nationalist Congress Party (NCP) leader Praful Patel, whose name has reportedly appeared in a land deal case linked to Dawood Ibrahim's close aide, Muhammed Iqbal Memon alias Iqbal Mirchi.The economic offences watchdog summoned the leader to appear before it on October 18.Iqbal Mirchi was a close aide of fugitive gangster Dawood Ibrahim.Patel had, on Monday, said that he will answer whatever he has to when the "time comes".Meanwhile, former Maharashtra chief minister and senior Congress leader Prithviraj Chavan had said that the NDA government should investigate if there was any deal between Patel."If any deal or agreement was done, then this government should investigate and tell us what's happened," he had said on Monday.Mirchi had bought three properties Sea View, Marium Lodge and Rabia Mansion totally measuring 1,537 square metres in Worli area of Mumbai on September 1986 for an amount of Rs 6.5 lakh through his company ..