The mass arrest and expulsion was part of a month-long operation involving both Fijian and Chinese law enforcement agencies, and echoes similar joint operations carried out in Indonesia and Cambodia last week.
Cyber criminals targeting victims in China have increasingly exploited technological advances to operate from abroad in a bid to evade authorities.
The Fiji-based ring is suspected of involvement in more than 50 telecom and online fraud cases, and cost victims in China more than six million yuan (US$892,000), Fijian police said Tuesday, without giving precise details of the scams.
The accused were flown to Changchun in northeast China's Jilin Province.
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China's official Xinhua news agency said the scam came to light after one of the victims was swindled out of 1.3 million yuan and committed suicide, triggering a large-scale investigation.
The probe exposed an illegal online gambling and lottery gang involving more than 200 suspects based in China, Indonesia and Fiji who had illegally taken nearly 100 million yuan.
A team of Chinese police were sent to Fiji four weeks ago and on July 18 they arrested the 77 suspects and confiscated equipment, including mobile phones, computers and bank cards.
Beijing has become increasingly assertive in extraditing overseas fraud suspects.
Last week, Indonesia deported 143 people, including 22 Taiwanese, to China over fraud cases, days after police said they had busted a sprawling US$450 million cyber fraud ring targeting wealthy businessmen and politicians in China.
The deportations drew a strong protest from Taiwan, which said the Taiwanese suspects should have been returned to the island.
Taiwan's representative office in Suva said it had been assured by Fiji police that the 77 deported from the South Pacific nation were all nationals of the People's Republic of China.
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