Thousands of people have assembled in the historic Iranian city of Isfahan to honor Supreme Leader Ayatollah Ali Khamenei, The Caspian Post reports, citing Press TV.

Footage released by Iran’s English-language state broadcaster Press TV shows a vast crowd gathered at Naqsh-e-Jahan Square, expressing grief and solidarity.

Earlier on Sunday, authorities officially confirmed Khamenei’s death after a reported joint US-Israeli strike targeted Tehran on Saturday.