Sohan Shihn was arrested from an undisclosed location and produced before a local court which sent him into a one-day police remand, said Satnampura SHO Sikander Singh.
He said that police were raiding suspected hideouts to trace the other four accused.
Local police had booked five persons - Sohan, his wife Veena Shinh, his sons Lokesh Shinh and Mohit Shinh and daughter-in-law Idlim Shinh - on charges of fraud, forgery, criminal conspiracy on a complaint of a Belgium-based NRI Sarabjit Singh who had accused them of duping him of Rs 15 crore on the pretext of boosting his business prospects.
Projected himself as a banker in Australia and a business expert, Lokesh had trapped Sarabjit in an investment for a business deal in Dubai, defrauding him of Rs 15 crore, police had said after registering a case in the incident.