President Trump boosted the US’ military presence in the Middle East after learning that Iran told some of its proxy forces that they can target Americans in the region, according to a report on Thursday.

The US military is tracking threats including possible missile attacks launched by small ships in the Persian Gulf, assaults by Iranian-trained Shiite militias in Iran, and strikes against US ships by Houthi rebels in Yemen, NBC News reported.

The information showed that while an Iranian official discussed unleashing Iran-backed forces on Americans, there was no mention of attacks on troops from other nations.

At the same time, the US began noticing the movement of Iranian and Iranian-backed forces in the region, prompting Marine Corps Gen. Frank McKenzie, commander of the US Central Command, to ask to bolster existing forces.

Last weekend, the White House cited “troubling and escalatory indications and warnings” involving Iran in sending an USS Abraham Lincoln aircraft carrier strike group steaming to the Persian Gulf.

“The United States is not seeking war with the Iranian regime, but we are fully prepared to respond to any attack, whether by proxy, the Islamic Revolutionary Guard Corps, or regular Iranian forces,” national security adviser John Bolton said in a statement Sunday.

A spokesman for the Central Command wouldn’t elaborate on military plans.

“U.S. Central Command has seen recent and clear indications that Iranian and Iranian proxy forces were making preparations to possibly attack U.S. forces in the region,” Capt. Bill Urban told NBC News. “This include threats on land and in the maritime. We are not going to be able to provide detailed information on specific threats at this time.”