Protesters in Iran have tried to break into a local government building in the southern province of Fars, on a fourth day of demonstrations sparked by a currency collapse.

Officials reported that three police officers were injured and four individuals arrested in the city of Fasa.

Confrontations have also arisen in the western provinces of Hamedan and Lorestan.

The authorities in Tehran declared Wednesday a bank holiday in an apparent attempt to quell the unrest.

Footage shared on social media showed demonstrators breaking the governor's office gate in Fasa, while another video depicted security forces responding with gunfire and tear gas amidst a backdrop of shuttered shops.

As a precaution, schools, universities, and public institutions were closed throughout the country due to the last-minute public holiday, justified by the government as a measure to save energy amid cold weather, though many viewed it as a tactic to contain protests.

The protests began in Tehran on Sunday, sparked by shopkeepers' anger over a significant fall in the Iranian currency value against the US dollar.

By Tuesday, the protests had attracted university students and spread to several cities, with demonstrators vocalizing their disdain against the clerical rulers of Iran.

These protests have emerged as the most extensive since the 2022 uprising, ignited by Mahsa Amini's death while in police custody over hijab regulations, though their scale remains smaller.

To prevent further escalation, enhanced security measures are now present in Tehran, where the demonstrations began.

President Masoud Pezeshkian has stated that the government is willing to address the legitimate demands of protesters; however, prosecutor general Mohammad Movahedi-Azad warned against any attempts to instigate instability, vowing a decisive response.