Follow-up investigations into the MBI investment scam have led to the arrest of six new suspects including one with the title of Datuk Seri, and two Datuks.br br Inspector-General of Police Datuk Seri Mohd Khalid Ismail, at a press conference on the matter in Bukit Aman Friday (Aug 22), said that the six were arrested between July 26 and Aug 15.