Disgraced hedge fund founder Raj Rajaratnam has arrived at a federal prison to begin serving the longest-ever sentence for insider trading.
Rajaratnam, who was sentenced to 11 years in jail, reported to a facility in Massachusetts.
He was fined $92.8m (£59.2m), also a record, and his case has led to more than two dozen related convictions.
The Galleon Group founder lost his bid to be freed during the appeals process, as he was considered a flight risk.
He reported on Monday to the Federal Medical Center in Devens, Massachusetts, which specialises in inmates who need medical care.
The Sri Lankan-born tycoon has advanced diabetes and will soon need a kidney transplant. His poor health was a sentencing consideration.
Rajaratnam was convicted in May on 14 counts related to insider trading.
His prison term is nearly half of the 20 years recommended by prosecutors.
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