LANSING, Mich. (AP) — Gov. Gretchen Whitmer traveled to Delaware last weekend to meet with Joe Biden, the presumptive Democratic presidential nominee’s first known in-person session with a potential running mate as he nears a decision.

Whitmer visited Biden last Sunday, according to two high-ranking Michigan Democrats who spoke on the condition of anonymity because they were not authorized to discuss the matter publicly. The first-term governor of the battleground state has long been on his short list of possible running mates.

Flight records show a chartered flight left Lansing’s Capital Region International Airport for Delaware Coastal Airport at 5:33 p.m. and returned at 11:16 p.m.

The governor’s office declined to confirm or deny the trip.

“We don’t discuss her personal schedule,” spokeswoman Tiffany Brown said.

Biden’s campaign declined to comment.