Nimitz has remained in the northern Arabian Sea on the orders of outgoing President Donald Trump.
The Pentagon changed its mind and ordered the Nimitz to turn around and remain in the region earlier this month after it left the Arabian Gulf and was due to return home.
“Due to the recent threats issued by Iranian leaders against President Trump and other US government officials, I have ordered the USS Nimitz to halt its routine redeployment,” Acting Secretary of Defense Chris Miller said on January 3.
“The USS Nimitz will now remain on station in the US Central Command area of operations.”
January 3 marked the one-year anniversary of the assassination of Qasem Soleimani, the head of Iran's Islamic Revolutionary Guard Corps (IRGC).
The Islamic Republic has vowed to avenge the general’s death.