ED’s case against Ambani and his group entities and associates is handled by a special investigation team constituted at the agency’s headquarters here. The duo, along with Amitabh Jhunjhunwala, who is in judicial custody, comprised the core leadership team of Ambani. Doshi was earlier arrested in 2011 by CBI in its 2G spectrum scam case and was behind bars for seven months before he was granted bail.