Iran has issued a threat of retaliation following the seizure of an Iranian cargo ship by U.S. Marines near the Strait of Hormuz, according to CBS News reporting by Charlie D'Agata.

Video footage released by the U.S. military appears to show Marines boarding and taking control of the Iranian vessel in the strategically critical waterway, which connects the Persian Gulf to the Gulf of Oman and serves as a transit point for a significant portion of the world's oil supply.

The incident comes at a particularly sensitive moment, with a regional ceasefire set to expire this week. The timing has heightened concerns about the potential for further escalation between the two countries, which have maintained deeply hostile relations for decades.

A flashpoint in a volatile region

The Strait of Hormuz has long been a focal point of U.S.-Iran tensions. Iran has previously threatened to close the strait during periods of heightened conflict, a move that analysts say would have significant consequences for global energy markets.

The seizure of cargo ships in the region is not without precedent. Both the United States and Iran have in recent years been involved in the detention of vessels, often citing violations of sanctions or international maritime law. Each incident has carried the risk of triggering a broader confrontation.

Iran's government has characterized the latest seizure as an aggressive act and signaled it would not go unanswered, though specific details of any planned response had not been confirmed at the time of reporting.

Ceasefire expiration adds urgency

The approaching end of the ceasefire deadline adds an additional layer of urgency to the standoff. Officials and analysts have warned that any military exchange in or around the strait could rapidly draw in other regional actors and disrupt global shipping lanes.

The U.S. military has not provided detailed public comment on the legal basis for the seizure beyond the video footage released. Iran, for its part, has rejected the legitimacy of the action.

CBS News first reported on the incident, citing video provided by U.S. military sources. The situation remains fluid, with developments expected as the ceasefire deadline approaches.