President Trump, in a series of early morning Twitter posts on Tuesday, attacked Google for what he claimed was an effort to intentionally suppress conservative news outlets supportive of his administration.

Mr. Trump’s remarks — and an additional warning later in the day that Google, Facebook and Twitter “have to be careful” — escalated a conservative campaign against the internet industry that has become more pointed since Apple, Google and Facebook removed content from Alex Jones, a right-wing conspiracy theorist who runs the site InfoWars and has been a vocal supporter of Mr. Trump.

“Google search results for ‘Trump News’ shows only the viewing/reporting of Fake New Media,” Mr. Trump said on Twitter at 5:24 a.m. “In other words, they have it RIGGED, for me & others, so that almost all stories & news is BAD. Fake CNN is prominent.”

Mr. Trump added that “they are controlling what we can & cannot see. This is a very serious situation-will be addressed!”