BlackBerry and Facebook executives reportedly met last week about a possible bid for the smartphone maker, according to a Wall Street Journal report.
BlackBerry did not comment on the report, but it said its special committee was conducting "a robust and thorough review of strategic alternatives," adding that the company would not disclose further developments with respect to the process.
BlackBerry announced last month that it had reached a preliminary agreement to be bought by a consortium led by Fairfax Financial Holdings for $4.7 billion.
The group, which plans to take the company private, will negotiate and execute a definitive transaction agreement by Nov. 4.
Google, Lenovo, Cisco, SAP and even Samsung have also been rumored as potential buyers for bits and pieces of BlackBerry's business. BlackBerry co-founders Mike Lazaridis and Douglas Fregin are also considering a bid for the company.