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), 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.

Lehman Brothers Holdings Inc LEH.N, Credit Suisse and RBS Greenwich Capital managed the three-year and Goldman Sachs Group Inc (GS.N), JPMorgan Chase & Co (JPM.N) and Merrill Lynch & Co MER.N managed the 10-year issue.

Including these new offerings, Freddie Mac has issued $32 billion of reference notes during 2008 and has about $257 billion in reference notes and bonds outstanding, Freddie Mac said in a press release. (Reporting by Caryn Trokie; Editing by Theodore d'Afflisio)