Vessels near the Strait of Hormuz, as seen from Musandam, Oman, Aug. 6. Reuters-Yonhap

SINGAPORE — Shipping traffic at the Strait of Hormuz fell below the month average toward the end of the week due to volatile sentiment between the United States and Iran, with both countries making competing claims over its control.

The Strait of Hormuz is "under Iran's control and management," the recently appointed head of Iran's Basij paramilitary unit said on Thursday.

Meanwhile, the United States on Thursday said it could maintain a naval blockade of Iran indefinitely and would ratchet up economic pressure on Tehran as ceasefire talks have floundered.

Commodity vessel transits at Hormuz picked up slightly on Thursday, but remained lower than the month's daily average of 12, based on Kpler data in August so far.