DUESSELDORF/FRANKFURT (Reuters) - German energy group Uniper (>> Uniper SE) views as "hostile" last week's takeover approach by Finnish peer Fortum (>> Fortum Oyj), its chief executive said on Monday, adding it came after a previous bid that Uniper rejected after a careful examination.

"This is a hostile push from Fortum," Klaus Schaefer said in his first interview after Fortum last week said it was in advanced talks to buy E.ON's (>> E.ON) 46.65 percent in Uniper for 22 euros per share, or 3.8 billion euros (3.34 billion pounds).

Schaefer said this was the second attempt by Fortum to buy Uniper following a 19 euros-per-share bid in late July for the whole group.

(Reporting by Tom Kaeckenhoff and Christoph Steitz; Editing by Arno Schuetze)

Stocks treated in this article : Fortum Oyj, E.ON, Uniper SE