SINGAPORE (Reuters) - AirAsia Bhd's (AIRA.KL) group chief executive, Tony Fernandes, dismissed a media report that the Malaysian carrier is weighing a bid for Japan's Skymark Airlines Inc .

"Never seen such rubbish. AirAsia has no interest in Skymark in Japan," Fernandes, co-founder of the budget airline, wrote on Twitter on Tuesday.

Skymark's shares jumped 28 percent after the Nikkei business daily reported that AirAsia is in talks with financial institutions on a possible tender offer for the struggling carrier.

"We focused on new airline," Fernandes said in a Twitter message. Last month, AirAsia said it would set up a low-cost airline with Japan's biggest online retailer, Rakuten Inc (4755.T), and other companies.

(Reporting by Anshuman Daga and Aradhana Aravindan)