President Biden is speaking out publicly for first time about his granddaughter Navy Joan Roberts, the estranged daughter of his son Hunter Biden who he has previously refused to acknowledge.

"Our son Hunter and Navy’s mother, Lunden, are working together to foster a relationship that is in the best interests of their daughter, preserving her privacy as much as possible going forward," Biden said in a statement to People on Friday.

"This is not a political issue, it’s a family matter," he added. "Jill and I only want what is best for all of our grandchildren, including Navy."

This is a developing story. Check back for updates.