Trump walked across the White House lawn — wearing a mask — as he departed for Walter Reed Medical Center after testing positive for COVID-19

• President Donald Trump left the White House on Friday for Water Reed Medical Center, where he will be admitted after testing positive for COVID-19. He wore a mask.
• Trump and the First Lady went into self-quarantine after testing positive for the virus early Friday morning, but the White House announced he developed a fever and cough later in the day and would be taken to the hospital for a "few days."
• Trump left the White House Friday evening, walking across the south lawn to board Marine One without assistance.

President Donald Trump departed the White House Friday evening for Walter Reed Medical Center, where he will be admitted for a "few days" after testing positive for COVID-19 and developing symptoms.

Trump boarded the presidential helicopter, Marine One, after walking across the south lawn without assistance from staff. He wore a mask while making the walk.

"Out of an abundance of caution, and at the recommendation of his physician and medical experts, the President will be working from the presidential offices at Walter Reed for the next few days," the White House said in a statement.

Trump will remain at the military hospital at the doctor's recommendation and is expected to undergo additional testing, though it is unclear which tests he'll be given. The White House said he's not in serious condition and plans to work from an executive office suite inside the facility.

The president announced via Twitter early Friday morning that he and First Lady Melania Trump had tested positive for COVID-19, just hours after Bloomberg and other media outlets reported that his close adviser, Hope Hicks, had also contracted the disease. Trump said he and the First Lady had gone into self-quarantine while awaiting results.

White House physician Sean Conley said in a memo Trump was "fatigued but in good spirits," while news outlets reported Friday that he is also experiencing a low-grade fever and a cough.

Trump is not the first president to stay overnight at Walter Reed. President Ronald Reagan stayed the night in the hospital in 1989 after a minor surgery to correct a condition that caused a curvature of the ring finger on his left hand.

But Trump's COVID-19 diagnosis is the most serious medical condition a president has faced since Reagan was shot in 1981. Reagan received treatment at George Washington University Hospital.

Watch C-SPAN's video of Marine One lifting off from the White House lawn Friday.