Dubai Islamic Bank (DIB) has completed the purchase of a 24.9 percent stake in Indonesia's Bank Panin Syariah from its parent firm, an executive at Bank Pan Indonesia was quoted as saying on Wednesday.

DIB, the largest Islamic bank in the UAE, said last month that it was in talks to buy 25 percent of Indonesia's only listed sharia-compliant lender, which it would jointly manage and operate with Bank Pan Indonesia.

In two separate statements to the Indonesian stock exchange, Bank Panin Indonesia said an unidentified buyer had acquired 10 percent of the Islamic unit on May 21 and 13.5 percent on May 22. No purchase price was given in the filings.

However, Roosniati Salihin, vice president of Bank Panin Indonesia, told The Jakarta Post that the buyer was the Dubai-based bank.

"The agreement (with DIB) was made official about two weeks ago," Salihin was quoted as saying.

"Now DIB controls a 24.9 percent stake in Bank Panin Syariah, while Panin remains the majority shareholder with 64.01 percent," she added.

The deal was said to be worth 251.79 billion rupiah ($21.2 million), the newspaper wrote.

DIB didn't immediately respond to a request for comment. - Reuters