The Economic Offences Wing (EOW) of the Mumbai Crime Branch on Friday arrested the chief operating officer of SpeakAsia, Tarak Bajpayee, along with three others for defrauding more than 13 lakh investors of over Rs 1,300 crore. Sharma has been on the run ever since the scam came to light. The Enforcement Directorate and the Income Tax Department are also investigating the case along with other state police units.