Media sources have reported an ongoing rally in Tehran on Monday, December 30. Participants have gathered at Imam Hussein Square for the event, at which large crowds have been reported.
A heightened security presence and transportation disruptions are to be expected in the vicinity of the rally and any associated gatherings.
The rally is said to be an annual pro-government gathering that began in 2009, following the Green Movement that opposed former President Mahmoud Ahmadinejad's reelection. The rally comes weeks after the start of nationwide anti-government protests in Iran.
Individuals in Tehran are advised to monitor developments to the situation, avoid all protests as a precaution, anticipate transportation disruptions near demonstration sites, and adhere to instructions issued by local authorities.