U.S. President Donald Trump accused Alphabet Inc.’s Google of rigging its search results to display only negative stories about him, calling it “a very serious situation” that “will be addressed.”

“Google search results for ‘Trump News’ shows only the viewing/reporting of Fake New Media. In other words, they have it RIGGED, for me & others, so that almost all stories & news is BAD, Fake CNN is prominent. Republican/Conservative & Fair Media is shut out. Illegal," Trump tweeted early Tuesday, in his latest claim of bias on the part of a news or social media company.

Google search results for “Trump News” shows only the viewing/reporting of Fake New Media. In other words, they have it RIGGED, for me & others, so that almost all stories & news is BAD. Fake CNN is prominent. Republican/Conservative & Fair Media is shut out. Illegal? 96% of...

In a subsequent tweet, he said “Google & others are suppressing voices of Conservatives and hiding information and news that is good. They are controlling what we can & cannot see. This is a very serious situation-will be addressed!”

....results on “Trump News” are from National Left-Wing Media, very dangerous. Google & others are suppressing voices of Conservatives and hiding information and news that is good. They are controlling what we can & cannot see. This is a very serious situation-will be addressed!

The most recent broadside follows the president’s Aug. 24 claim that social media “giants” are “silencing millions of people.” Such accusations -- along with assertions that the news media and Special Counsel Robert Mueller’s Russia meddling probe are biased against him -- have been a chief Trump talking point meant to appeal to the president’s base.

Trump in July lashed out at the European Union in response to a record $5 billion fine against Google over its mobile phone operating system, calling Google one of America’s “great companies.”

Trump also complained about the issue earlier this month as social media companies moved to ban right-wing "Infowars" conspiracy theorist Alex Jones from their platforms.

Apple, YouTube and Spotify have permanently removed some of Jones' content, Facebook has suspended him for 30 days and removed some of his pages, while Twitter gave Jones a weeklong timeout and was mulling deeper changes to try to limit the spread of fake news, misinformation and hate speech.

Trump has not named Jones in any tweets on the issue. He once praised Jones' "amazing" reputation.

The president also claimed on Tuesday without evidence that 96 percent of the "Trump News" search results on Google are from "National Left-Wing Media." He said this "very serious situation-will be addressed!"

The issue is also of concern on Capitol Hill.

The House Energy and Commerce Committee, chaired by Rep. Greg Walden, R-Ore., recently announced that Twitter CEO Jack Dorsey will testify before the panel on Sept. 5 about the platform's algorithms and content monitoring.

This report contains material from Bloomberg News and The Associated Press.