Along with its supplier Foxconn.
Apple is considering teaming up with its supplier Foxconn to bid for Toshiba’s semiconductor business, public broadcaster NHK said on Friday—the latest twist in the sale of the world’s second-biggest flash memory chipmaker.
The U.S. technology giant is considering investing at least several billion dollars to take a stake of more than 20% in a plan that would have Toshiba tosbf maintain a partial holding to keep the business under U.S. and Japanese control, NHK reported, citing unidentified sources.
The proposal is aimed at allaying the Japanese government’s concerns over any transfer of sensitive technology to investors it deems a risk to national security, it said.
Foxconn fxcny , which participated in the first round of the auction, has been considered such a risk due to its deep ties with China. The bulk of Apple’s iPhones are manufactured at Foxconn’s extensive manufacturing base there.
NHK said Apple aapl wants the Taiwan firm to own a stake of around 30% of Toshiba’s chip business.
Apple was not immediately available to comment. Foxconn, formally known as Hon Hai Precision Industry hnhpf , declined to comment.
An investment by Apple would be its first direct stake in a major global memory chipmaker as it seeks to secure a stable supply of key components. Samsung ssnlf is the biggest maker of flash memory chips, followed by Toshiba, SK Hynix, and U.S.-based Micron Technology mu .
The report comes as Western Digital Corp wdc , Toshiba’s partner and one of the bidders of its chip business, warned this week that the Japanese firm is violating a joint venture contract in plans to sell to its chip unit, and urged that it be given exclusive negotiating rights.
Toshiba has narrowed down the field of bidders for its chip unit to four suitors, sources have also said.
They are U.S. chipmaker Broadcom brcm , which has partnered with private equity firm Silver Lake Partners; South Korea’s SK Hynix; Foxconn, the world’s largest contract electronics maker, and Western Digital.
Broadcom has put in the highest first-round offer of 2.5 trillion yen ($23 billion), while Foxconn offered 2 trillion yen, a person briefed on the matter told Reuters this week.
Apple was not part of any of those four bids, according to the person. It is unclear whether it participated in the first round of the auction that sources have said drew around 10 offers.
Shares in Toshiba fell 5% on Friday, hit by a Bloomberg report that the chip business sale had been temporarily put on hold to address the concerns raised by Western Digital, which Toshiba denied.
“It is not true Toshiba has put the chip sale process on hold,” a Toshiba spokesman said.