Breaking: Special counsel investigation will include Trump Jr. Russian meeting

Sources told CNN Tuesday that Special Counsel Mueller will expand his investigation to included the meeting between Donald Trump Jr. and a Russian lawyer that was revealed by the New York Times.

The New York Times reported on the meeting on Saturday, after which Trump Jr. released a statement saying simply that they had talked about adoption services. When more details became available, Trump Jr. expanded his statement and admitted that he had gone to the meeting hoping to receive emails hacked from Hillary Clinton, but was misled to talk about adoption instead.

After Monday evening's bombshell that the New York Times knew of an email proving Trump Jr. was told the meeting was behalf of the Russian government's effort to defeat Hillary in favor of Trump. This forced Trump Jr. to release the emails publicly on his Twitter account Tuesday.

"The investigators working for Robert Mueller are now planning to investigate the meeting and exchanges," CNN's Manu Raju told Wolf Blitzer, "the email exchanges that Donald Trump Jr. today disclosed publicly."

"The full details of the meeting and the interactions were not known to the FBI," he explained. "The FBI has been looking at this, as you know, for about a year. But they didn't know all of these interactions, at least, I'm told, until recently."

"What's happened more recently is that Jared Kushner the president's son-in-law has amended his SF-86 form," he added. "This is the form that he submitted to get a permanent security clearance from the FBI. As part of that process, Jared Kushner disclosed this meeting because he attended it, as you know, with Paul Manafort, the then-chairman of the campaign, as well as Don Junior."

BREAKING: Robert Mueller's investigators plan to examine the meeting and emails Donald Trump Jr. disclosed https://t.co/hllBAhlYoc pic.twitter.com/DhxKlxFsnj

— The Situation Room (@CNNSitRoom) July 11, 2017

"It should be noted that the FBI has, in the past year, taken a look at Don Jr's finances, his associations, as part of the broader look at whether or not there was any collusion or whether or not there's any ties to Russia that crossed over into criminal territory," Raju added.

Although Trump Jr. had vehemently denied any level of Russian collusion from the Trump campaign, an email he released from publicist Rob Goldstone said the meeting was about information from "Russia and its government's support for Mr. Trump." However, defenders of the president's son note that according to his account, no such information was actually exchanged.