Secretary of State Rex Tillerson’s management style has reportedly left him isolated from many diplomats and members of the State Department.

Several career diplomats told The Washington Post Thursday that they have yet to meet their new boss. They said they've been told not to speak to him directly or make eye contact.

Tillerson reportedly skipped visits with State Department employees and their families on his first three foreign trips, which have been seen as morale boosters in past administrations.

A senior aide told The Washington Post that Tillerson’s style reflects his desire to run the State Department “without any fanfare.”

The former ExxonMobil chief has remained below the radar since Inauguration Day and is still the only Senate-confirmed official appointed by President Trump who works at the State Department.

Tillerson is likely gearing up to meet Russian Foreign Minister Sergey Lavrov and President Putin during an upcoming visit to Moscow in April, the U.S. ambassador to Russia said Tuesday.

The Associated Press contributed to this report.