New Delhi: The Enforcement Directorate has summoned Rashesh Shah, Chairman, and CEO of Edelweiss Financial Services Limited, to join the investigation in a foreign exchange case, ED officials said. Shah is under the scanner in a Rs 2,000 crore forex scam. The case pertains to a violation of foreign exchange involving Capstone Forex Private Limited, a Mumbai-based firm. Shah did not turn up for questioning on January 9 and new summons has been issued against him. (IANS)