Smoke rises following an Israeli airstrike in southern Lebanon, as seen from the Israeli side of the border in Upper Galilee, northern Israel, Jun. 17. According to Israel's military, a soldier was severely injured, two others moderately injured, and two additional soldiers were lightly injured as a result of an explosive drone impact in southern Lebanon. EPA-Yonhap

WASHINGTON — The U.S. military said Saturday it remained "present and vigilant" in the Strait of Hormuz, shortly after Iran announced it was closing the critical shipping lane.

"US forces remain present and vigilant to ensure all aspects of the agreement with Iran are adhered to, obeyed, and in full force and effect," U.S. Central Command (CENTCOM) said in a statement.

CENTCOM, which oversees U.S. forces in the Middle East, said 55 commercial vessels had transited the strait Saturday and that "safe passage through the international waterway remained intact today."

The statement was issued at around 10:30 am (local time).