FILE PHOTO: The logos of Amazon, Apple, Facebook and Google are seen in a combination photo from Reuters files. REUTERS/File Photo

(Reuters) - The U.S. Justice Department is opening a broad antitrust review into whether dominant technology firms are unlawfully stifling competition, the Wall Street Journal reported on Tuesday, citing department officials.

The review is geared toward examining the practices of online platforms that dominate internet search, social media and retail services, including Facebook Inc, Alphabet Inc's Google, Amazon.com Inc and Apple Inc, according to the report. (on.wsj.com/2SwQe9D)

The Justice Department, Facebook, Alphabet, Amazon and Apple did not immediately respond to requests for comment.