Hundreds of thousands of people across Iran have marked the 28th anniversary of the founder of the Islamic Republic Ayatollah Ruhollah Khomeini.

Visitors from across the country, as well as top officials from other countries, participated in the event which was held at the mausoleum of Ayatollah Khomeini on Sunday.

Ayatollah Khomeini, also known as Imam Khomeini in Iran, led the Islamic Revolution in 1979 which overthrew the Pahlavi monarchy and the last Shah of Iran Mohammad Reza Pahlavi.

He was arrested and imprisoned in 1963 by the ruling regime. The following years marked his exile to Turkey, Iran and France before returning to Iran in 1979 as anti-regime protests were at their peak.

He was named Man of the Year in 1979 by American news magazine Time for his international influence.

Following the revolution, Imam Khomeini became the country’s Supreme Leader. After his demise on June 1989, Ayatollah Ali Khamenei succeeded him.

His funeral which was held on June 11, 1989 has been recorded by the Guinness World Records as the most crowded funeral in the history, with over 10,000,000 people attending.

Every day, thousands of Iranians gather in his mausoleum to pay tribute to their late Imam.