US Navy Secretary John Phelan is leaving the Trump administration, the Pentagon announced on Wednesday.
His departure will be "effective immediately", Pentagon spokesman Sean Parnell said in a social media post.
Navy Undersecretary Hung Cao will serve as acting secretary, Parnell added.
Phelan is the latest high-ranking military leader to leave the administration in recent months. His departure comes amid the US-Israel war with Iran and the continued US blockade of the Strait of Hormuz.
The Navy did not provide a reason for Phelan's departure.
