Australia's REA Group, owned by Rupert Murdoch controlled-News Corp, on Friday bumped up its takeover bid for Rightmove to 6.2 billion pounds ($8.29 billion) after the UK firm rejected three of its previous offers.

The new proposal from REA, a property listing firm, comprises of an offer price of 775 pence apiece, an 17% premium to Rightmove's closing price on Thursday. The company has also offered an additional special dividend of 6 pence per share.

REA's new bid is 1.4% higher than its previous offer of 770 pence per share, or 6.1 billion pounds, and 11% more than its first offer of 705 pence a share.

The UK firm did not immediately respond to a Reuters request for comment.

Rightmove rejected the last three proposals from REA, saying they undervalued the company and were "uncertain, highly opportunistic and unattractive".

REA on Friday also urged the London-based firm’s shareholders to ask the board to engage in talks after the company declined to discuss a deal following the previous takeover proposals.

The Australian company additionally requested an extension of the Sept. 30 deadline to make a firm binding offer.

($1 = 0.7477 pounds)

(Reporting by Rishav Chatterjee in Bengaluru; Editing by Sonia Cheema)