Some of the victims have approached the City of London Police, however, many people have not contacted the police which today asked others to come forward and report the case.
The police have arrested 14 people as part of the suspected "Ponzi scheme" linked with Capital World Markets (CWM) based in the financial district of London.
They believe about 450 Gurkha including retired and serving soldiers and Nepalese community members may have invested in the "Ponzi scheme" which dupes people by distributing returns to investors from the money paid in by other investors.
"We are very keen to hear from members of the Ghurkha and Nepalese community who have put money into CWM's managed fund. So far, only five victims from this community have come forward, but we think more than 200 may have invested," City of London Police Detective Chief Inspector David Manley said.
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"Financially, they are not the biggest investors but in terms of harm they are among the biggest victims. This happened around the time of the Nepal earthquake and lots of Gurkhas send money home, so this scam will have really hit them hard.
Offering a return of five per cent a month, hundreds were lured into investing in the scheme, with an estimated 50 million pounds being poured in. More than half of those who fell prey to the fraud are believed to be Gurkhas.
"We would advise anyone who believes they have fallen victim to this suspected fraud to contact the City of London Police immediately," he said.