A man scaled the fence along the southern side of the White House just before midnight Friday — the first such breach reported during Donald Trump's presidency, the Secret Service said.

Trump would have been at the White House at the time, according to his schedule, but the intruder didn't manage to get far.

Secret Service officers arrested him on the south grounds without incident. The man, who was not immediately identified, had been carrying a backpack, but there were no hazardous materials found inside of it, officials said.

Officers also swept the south and north grounds of the White House, but "nothing of concern to security operations was found," the Secret Service said in a statement.

Department of Homeland Security Secretary John Kelly was briefed on the incident. It's unclear whether any other members of the Trump family were home at the time, and the Metropolitan Police Department deferred comments to the Secret Service.

The White House has seen numerous attempts by people trying to hop the fence surrounding the building. An incident in 2014 in which an Army veteran carried a folding knife onto the grounds led the White House to install sharp metal spikes on the fencing.