Leader of Islamic Revolution Ayatollah Seyyed Ali Khamenei has accepted the resignation of Ayatollah Ahmad Jannati as leader of Friday prayers in Tehran, the Leader's official website reported on Sunday. Ayatollah Jannati had earlier offered his resignation in a letter to the Leader after holding the post for 25 years. He thanked Ayatollah Khamenei for his continued support and trust in him throughout the years. The report did not spell out the reasons for his resignation, but it may have been due to an advanced age. Ayatollah Jannati is 91. He is currently serving various positions, including as chairman of the Assembly of Experts, a clerical body empowered to appoint and dismiss the Leader of Islamic Revolution and monitor his performance, and as secretary of the Guardians Council, which vets laws as well as presidential and parliamentary candidates.