NEW YORK (

TheStreet

) -- Officials have arrested four more suspects on insider trading and fraud charges as federal authorities continue their investigation of fraudulent hedge funds across the country.

Two of the arrests occurred in California, one in Boston and one in Texas. All four of the men had at one time been employed by California-based expert network,

Primary Global

.

Wire fraud and securities fraud charges have been brought against the defendants, who have been identified as Walter Shimoon, Mark Longoria, Manosha Karunatilaka and James Fleishman, according to a criminal complaint obtained by

Reuters

.

-- Written by Theresa McCabe in Boston.

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