No final Yahoo-Google ad agreement yet - source

SAN FRANCISCO, May 5 (Reuters) - Google Inc (GOOG.O: Quote, Profile, Research) and Yahoo Inc (YHOO.O: Quote, Profile, Research) are still hammering out the intricacies of a potential advertising and search deal, and no final agreement has been reached yet, a person close to Google said on Monday.

The two sides are also sharing their plans for a potential deal with antitrust regulators, the source said.

If any deal is struck, it would not prevent Yahoo from pursuing other partnerships, including with Microsoft Corp (MSFT.O: Quote, Profile, Research).

Other sources previously had told Reuters a deal between Yahoo and Google, in which Yahoo carries advertising from Google alongside its search results, could be announced this week.

(Reporting by Anupreeta Das, editing by Richard Chang)