The same networks reported that Clinton also met at her home with Colorado Gov. John Hickenlooper, whose name has been less prominent on Clinton's list of potential running mates. Clinton also met with Hickenlooper while campaigning in Denver late last month, and he later told reporters that the vice presidential search "briefly" came up.
Clinton also met behind closed doors Friday with Housing and Urban Development Secretary Julián Castro, another potential running mate, according to two other people familiar with the meetings.
Clinton's campaign confirmed late Friday that she held meetings regarding regarding a running mate but did not publicly discuss contenders. The former secretary of state was seen leaving her home around 5:40 p.m., by which time the meetings had apparently wrapped up.
On Thursday, Clinton campaigned in Northern Virginia with Sen. Timothy M. Kaine (D-Va.), who is also being vetted as a potential vice-presidential pick. The two traveled to Annandale in the same motorcade but not the same car. It is unclear whether Kaine and Clinton also met privately Thursday about the vice-president search, but according to a Kaine aide, the senator spent Friday in Richmond.
Warren campaigned with Clinton in Cincinnati in June. And Castro has been a regular surrogate for Clinton, campaigning with her and on her behalf throughout the Democratic primaries.
Karen Tumulty and John Wagner contributed to this report.