UPDATE 1 -Freddie Mac sells $6 bln notes in 2 parts

(Recasts headline, lead and adds background, distribution data and details of 10-year note sale)

NEW YORK, June 12 (Reuters) - Freddie Mac (FRE.N: Quote, Profile, Research, Stock Buzz), the No. 2 U.S. home funding company, on Thursday said it sold $3 billion in three-year reference notes due June 29, 2011 and $3 billion in 10-year reference notes due June 13, 2018.

The 3.875 percent three-year notes were priced at 99.757 to yield 3.960 percent or 103 basis points over two-year U.S. Treasuries.

The 4.875 percent 10-year notes were priced at 99.344 to yield 4.959 percent, or 79 basis points over similar Treasuries.

Freddie Mac said that 53 percent of the three-year notes were purchased in North America, while Asia took 31 percent of the issue and 14 percent went to Europe. Other regions purchased 2 percent, according to preliminary data.

Investment managers and central banks each bought 34 percent of the three-year notes, banks took 10 percent, others accounts purchased 13 percent, while insurance/pension funds bought 9 percent.

According to preliminary data, 52 percent of the 10-year notes were purchased in North America, while Asia took 37 percent, and Europe bought 11 percent.

Investment managers purchased 39 percent of the 10-year issue, central banks bought 24 percent, insurance/pension funds took 15 percent while others purchased 11 percent of the issue.

Settlement for both issues is June 13.