Nearly 1,300 probationary employees at the Centers for Disease Control and Prevention (CDC)—approximately one-tenth of its workforce—are being dismissed as part of the Trump administration’s directive to eliminate all probationary positions.

The Atlanta-based agency’s leadership was informed of the decision Friday morning in a verbal notice from the U.S. Department of Health and Human Services during a meeting with CDC officials, according to a federal source present at the meeting. The source, who was not authorized to speak publicly, provided details to The Associated Press on condition of anonymity.

The affected employees are expected to receive four weeks of paid administrative leave, though it remains unclear when individual notices will be issued, the source added.

This is a developing news story and will be updated as more information is available.

Reporting by the Associated Press contributed to this story.

Nearly 1,300 probationary employees at the Centers for Disease Control and Prevention (CDC)—approximately one-tenth of its workforce—are being dismissed as part of the Trump administration’s directive to eliminate all probationary positions.