Sri Lanka, April 7 -- Iranians have gathered in large numbers at bridges and power generation stations across the country, forming human chains to prevent them from being targeted, the country's state media reported on Tuesday.

The move comes after US President Donald Trump warned of strikes on key infrastructure in Iran, including bridges and power plants, if Tehran does not agree to his demands to end the war.

Footage shared by Iran's state media Press TV showed long lines of people, holding flags, standing outside power plants and bridges. Thousands were seen forming what appeared to be human shields around sites that the US had threatened to attack.

The Iranian government had earlier urged civilians, including youth, artists and at...