"Instead of offering congratulations to the people, I prefer to offer my sympathy and support for the suffering and sorrow they have endured," Khatami said in a video message Thursday on the occasion of the
"I... sincerely apologise to the people of Iran for the shortcomings in my work" while in office, he said.
As Iranians celebrated the new year on Saturday, the ultra-conservative Tasnim news agency slammed the ex-president over his remarks, saying: "Mr. Khatami, you are part of the problem, not the solution."
"The current dire social and political situation is largely the result of a government that came to power... with your support, and now you are an inseparable part of its track record," it added.
Iran is due to hold presidential and municipal elections on June 18, when the electorate will vote for a successor to President Hassan Rouhani, who is in his final four-year term.
In his remarks, Khatami, who served as president from 1997 to 2005, expressed hopes that the elections would be "free and inclusive".
The moderate Rouhani government came to power in an alliance with Iran's reformists, and Khatami is a prominent figure of the same faction.
Rouhani's signature diplomatic achievement, the 2015 nuclear deal, was supposed to end Iran's economic isolation by lifting sanctions in return for curbs on the country's nuclear programme.
But the accord has been on life support since 2018, when the former US president Donald Trump withdrew from the deal and reimposed sanctions on the Islamic republic.
"Mr. Khatami, what good does sympathising with people's woes (now) accomplish?" Tasnim said, asking if it would "fix" problems such as the high cost of living.
In November 2019, a surprise hike in fuel prices sparked a wave of protests across Iran, before they were put down amid a near-total internet blackout.
At least 304 people died in the unrest, according to London-based Amnesty International, while some authorities have announced 230 deaths during what they claim where “riots".
Agencies contributed to this report.
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