GPS signal interference was reported over Tehran and western Iran, according to posts on social media platform X. The social media channel "Khyber" stated that "Jorging GPS is ongoing over Tehran and western Iran" in a post shared on August 21st. The channel also linked to a Telegram channel for further updates. Southern Lebanon was also mentioned in a separate social media post on August 21st, though no specific details were provided regarding events in that region. No official confirmation or further details regarding the GPS interference have been released by Iranian authorities or international aviation bodies at this time.