The White House is closing in on the staffer or staffers who leaked President Trump’s private schedules to the press, acting White House chief of staff Mick Mulvaney said Sunday.

Since Axios published three months of the president’s schedules last weekend, the White House has been searching for the culprit behind the leak. The schedules showed that “Executive Time” -- or time for which nothing was planned for the president -- accounted for roughly 60 percent of Trump’s schedule.

During an interview on “Fox News Sunday,” Mulvaney said the person behind the leak is “likely” a career government worker and said the White House is “hoping to have a resolution” this week.

“When you find that person or persons, and it’s likely going to be a career staffer, you’re going to learn a lot about how hard it is to fire federal workers,” Mulvaney said.

The leak of Trump’s schedules “sheds light on the fact that many people who work for us weren’t hired for us,” he added.