Republican vice presidential nominee Mike Pence met with Arizona Sen. John McCain on the same day news broke that Donald Trump declined to endorse McCain, who is running for reelection.

The two met in Arizona on Tuesday, McCain's campaign confirmed to the Washington Examiner, as Pence swung through the state appearing in two Trump campaign events.

"Upon scheduling a campaign trip to Arizona, Governor Pence's office reached out to John McCain to request a meeting," said Lorna Romero, McCain's communications director. "John McCain was happy to welcome Governor Pence to Phoenix, and they enjoyed a friendly meeting, during which they discussed a variety of issues."

In an interview published Tuesday in the Washington Post, Trump said that he had a "difficult time" in deciding whether he should endorse McCain, citing his work with veterans.

"I've never been there with John McCain because I've always felt that he should have done a much better job for the vets," Trump said.

McCain slammed Trump on Monday for fueling a feud with DNC speakers Khizr and Ghazala Khan, Gold Star members who lost a son while serving in Iraq. The senator said Trump's criticism of the Khans does "not represent the view of our Republican Party, its officers, or candidates."

McCain has said he will back Trump in the presidential election in November, and as of yet, has not retracted his support.