Special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE is reportedly looking into an interaction between a Russian lawyer and Ivanka TrumpIvana (Ivanka) Marie TrumpTrump dismisses Ann Coulter after criticism: 'I hardly know her' On The Money: Trump to sign border deal, declare emergency to build wall | Senate passes funding bill, House to follow | Dems promise challenge to emergency declaration The Hill's Morning Report - Presented by the American Academy of HIV Medicine - Will there be any last-minute shutdown drama? MORE surrounding a controversial Trump Tower meeting during the campaign.

While the first daughter and now-White House adviser did not take part in the June 2016 meeting, she exchanged greetings with the Russian attorney and a lobbyist who attended the meeting as they stepped off an elevator, a person familiar with the exchange told the Los Angeles Times

Mueller's team is looking into any interactions the attorney, Natalia Veselnitskaya, and lobbyist, Rinat Akhmetshin, had with President TrumpDonald John TrumpTrump nominates ambassador to Turkey Trump heads to Mar-a-Lago after signing bill to avert shutdown CNN, MSNBC to air ad turned down by Fox over Nazi imagery MORE's family members and inner circle, the Times reported.

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The June 2016 meeting — when the president's eldest son, Donald Trump Jr.Donald (Don) John TrumpHouse chairman: Trump lawyers may have given false info about Cohen payments Sarah Sanders says she was interviewed by Mueller's office Trump dismisses Ann Coulter after criticism: 'I hardly know her' MORE, met with the attorney, who promised damaging information on Hillary ClintonHillary Diane Rodham ClintonOvernight Defense: Trump declares border emergency | .6B in military construction funds to be used for wall | Trump believes Obama would have started war with North Korea | Pentagon delivers aid for Venezuelan migrants Sarah Sanders says she was interviewed by Mueller's office Trump: I believe Obama would have gone to war with North Korea MORE — has become a flashpoint in the Russia probe.

Trump Jr., the president's son-in-law and senior adviser Jared KushnerJared Corey KushnerThe Hill's Morning Report - Presented by the American Academy of HIV Medicine - Will there be any last-minute shutdown drama? Rule change sharpens Dem investigations into Trump Drama hits Senate Intel panel’s Russia inquiry MORE and former Trump campaign chairman Paul ManafortPaul John ManafortMueller recommends Manafort serve at least 19 years in prison The Hill's 12:30 Report — Presented by Kidney Care Partners — Lawmakers scramble as shutdown deadline nears CNN's Toobin: 'Almost unrecognizable' Manafort 'in danger of losing his life' in prison MORE all attended the meeting with the Russian lawyer and lobbyist.

Trump Jr. has maintained that the meeting was primarily to discuss American adoptions of Russian children. 

In an excerpt from a new book detailing the early months of the Trump presidency, former White House chief strategist Stephen Bannon is quoted as saying that there was "zero" chance that President Trump did not know about the meeting.