March 18 (Reuters) - UBS Group AG (UBSG.S) is seeking government guarantees of about $6 billion for a potential takeover of Credit Suisse Group AG (CSGN.S), a person with knowledge of the discussions told Reuters on Saturday. The guarantees would cover the cost of winding down parts of Credit Suisse and potential litigation charges, the source said. Credit Suisse was valued at the equivalent of about $8 billion at the close on Friday. Deutsche Bank AG is also interested in acquiring parts of Credit Suisse, the first source said. Bloomberg earlier reported the German lender's interest in parts of Credit Suisse.

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