Former Iranian President Mohammad Khatami has joined opposition figure and ex-Prime Minister Mir Hossein Musavi in calls for political change as the country continues to be stricken with widespread anti-government protests.

"What is evident today is widespread discontent," the 79-year-old Khatami said on February 5 in remarks carried on local media.

He added that "there is no sign of the ruling system's desire for reform and avoiding the mistakes of the past and present."

Khatami, the reformist who served as president from 1997 until 2005, said he hoped "nonviolent civil methods [will] "force the governing system to change its approach and accept reforms."

"Iran and Iranians need and are ready for a fundamental transformation whose outline is drawn by the pure 'Woman, life, freedom' movement," he added.

Iran has been beset with widening unrest since the death of Mahsa Amini on September 16. The 22-year-old died while in custody after being arrested by the notorious morality police for improperly wearing a mandatory Islamic head scarf, or hijab.

Her death, which officials blamed on a heart attack, touched off a wave of protests in cities across the country. The authorities have met the unrest with a harsh crackdown that rights groups say has killed more than 500 people, including 71 children.

The protests pose the biggest threat to the Islamic government since the 1979 revolution.

Khatami's remarks come as Iran is set to mark the 44th anniversary of the revolution and follow comments on February 4 by Iranian opposition figure Musavi, who called for a "free" referendum in Iran and the drafting of a new constitution.

Musavi, 80, who has been under house arrest since 2011, made the call in a statement in which he said Iranians want fundamental change based on the slogan "Woman, life, freedom" -- which many have been chanting during recent antiestablishment protests.

Meanwhile, on February 5, Supreme leader Ayatollah Ali Khamenei pardoned "tens of thousands" of prisoners, including many arrested in the recent anti-government protests, state media reported.

"Prisoners not facing charges of spying for foreign agencies, having direct contact with foreign agents, committing intentional murder and injury, committing destruction and arson of state property, or not having a private plaintiff in their case will be pardoned," said state media, which added that the pardons were part of activities related to the anniversary of the revolution.

With reporting AFP and Reuters