Thousands of people are feared dead following a severe crackdown on anti-government protests in Iran, as families abroad receive harrowing reports from those still inside the country.
Describing the situation in their first calls home in several days, Iranians have spoken of extensive death and destruction.
An Iranian security official has told a news agency that the death toll could be around 2,000 people, including security personnel.
Human rights groups have raised alarms over reports that one protester, Erfan Soltani, is due to be executed tomorrow, with some describing the case as unprecedented in its speed.
Protests have been ongoing for several weeks. State media claimed that demonstrations had calmed last night, but the BBC has received footage from citizens reporting that protests continued in multiple locations across the country.
In response to the crackdown, US President Donald Trump has announced that countries conducting business with Iran could face a 25% tariff on trade with the United States.
Officials have told CBS News that the President has been briefed on a range of military and covert options, and his national security team is expected to meet later to discuss potential interventions.
Although some Iranians have been able to contact family members abroad, an ongoing internet blackout is hindering the verification of information from inside the country.
Source: Agencies