A longtime FBI deputy director who had been expected to replace Director Christopher Wray on an acting basis is retiring from the bureau.

A longtime FBI deputy director who had been expected to replace Director Christopher Wray on an acting basis is retiring from the bureau

Acting FBI Director Paul Abbate, who took the helm from Christopher Wray, resigned Monday around when President Trump took his oath of office.

Paul Abbate made the unexpected announcement in an email to senior officials Monday ahead of President Trump's inauguration.

The FBI’s acting director told senior leadership he was retiring Monday, as the bureau braces for a major shakeup under the Trump administration. Paul Abbate had earlier been expected to serve in the role for a few months after Christopher Wray’s departure.