Pence's name became a trending topic almost immediately after the reports were published.
But key Trump aides, including campaign chairman Paul Manafort and spokesman Jason Miller, downplayed the notion Thursday on the social network. They said the presumptive GOP presidential nominee hasn't made a decision regarding the conservative governor:
The denial didn't stop scrutiny of Pence as veep:
Trump later said Thursday said he was postponing the press conference scheduled for Friday morning to announce his vice presidential pick out of respect to the deadly attack in Nice, France that killed dozens of people.
Trump has previously said Pence was on the short list for VP, along with former House Speaker Newt Gingrich and New Jersey Gov. Chris Christie.
Pence is in the midst of a re-election campaign for governor. He faced intense scrutiny last year from tech and major business leaders after a signing a "religious freedom" law in Indiana that they viewed as legalizing discrimination against gays and lesbians. Following the backlash, Pence removed some of the law's harshest language.
Earlier Thursday, organizers of the Republican National Convention released a speakers list for the event which takes place next week in Cleveland. The list includes billionaire investor Peter Thiel, who was behind Facebook and PayPal.