Media and technology companies, including Sinclair Broadcast Group Inc., Google LLC's YouTube LLC and Amazon.com Inc., have shown interest in acquiring 21st Century Fox Inc.'s 22 regional sports networks that regulators want Walt Disney Co. to sell to win approval for buying Fox assets, Bloomberg News reported, citing sources familiar with the matter.

Other interested parties include buyout firms such as Blackstone Group LP and Apollo Global Management LLC, the sources said. The networks hold television rights to 44 professional basketball, baseball and hockey teams.

The sources said the sales process for the regional sports networks, which may be valued at about $20 billion, could begin within weeks.

In July, Disney and 21st Century Fox shareholders approved all proposals related to Disney's acquisition of certain Fox assets. Disney increased its offer for 21st Century Fox's assets to $71.3 billion, or $38 in either cash or shares of Disney common stock, compared to its original all-stock offer of $52.4 billion, or about $28 per share.

In June, the U.S. Department of Justice approved the transaction, assuming the sale of the Fox Sports Regional Networks.