Crowds of mourners are gathering in the Iranian city of Qom following the death of leading reformist cleric Grand Ayatollah Hoseyn Ali Montazeri at 87.
Some pro-reform websites say thousands of people are traveling to the city ahead of Monday’s funeral.
Other unverified reports say opposition supporters are also gathering in some squares in Tehran, fueling government concern of increased political tension.
Iran faced serious unrest after its disputed presidential election in June.
Grand Ayatollah Montazeri, one of Shia Islam’s most respected figures and once tapped to become Iran’s undisputed number one was a leading critic of President Mahmoud Ahmadinejad, who said last August that the turmoil following the election “could lead to the fall of the regime”. Source: BBC