According to activists, female students in Tehran yelled “go lost” when Iranian President Ebrahim Raisi visited their university campus on Saturday and criticized demonstrators angered over the murder of a young lady in detention.

As widespread protests in Iran reached their fourth week, Raisi spoke to professors and students at Alzahra University in Tehran, delivering a poem that compared “rioters” to flies.

“They imagine they can achieve their evil goals in universities,” state TV reported. “Unbeknownst to them, our students and professors are alert and will not allow the enemy to realise their evil goals.”

A video posted on Twitter by the activist 1500tasvir website showed what it said were women students chanting “Raisi get lost” and “Mullahs get lost” as the president visited their campus.

An Iranian state coroner’s report denied that 22-year-old Mahsa Amini had died due to blows to the head and limbs while in morality police custody and linked her death to pre-existing medical conditions, state media said on Friday.

Amini, an Iranian Kurd, was arrested in Tehran on Sept. 13 for wearing “inappropriate attire”, and died three days later.

Her death has ignited nationwide demonstrations, marking the biggest challenge to Iran’s clerical leaders in years.

Women have removed their veils in defiance of the clerical establishment while furious crowds called for the downfall of Supreme Leader Ayatollah Ali Khamenei.

The government has described the protests as a plot by Iran’s enemies including the United States, accusing armed dissidents – among others – of violence in which at least 20 members of the security forces have been reported killed.

Rights groups say more than 150 people have been killed, hundreds injured and thousands arrested by security forces confronting protests.

After a call for mass demonstrations on Saturday, security forces shot at protesters and used tear gas in the Kurdish cities of Sanandaj and Saqez, according to the Iranian human rights group Hengaw.

In Sanandaj, capital of the northwestern Kurdistan province, one man lay dead in his car while a woman screamed “shameless”, according to Hengaw, which said he had been shot by security forces after he honked his horn as a sign of protest.

But a senior police official repeated the claim by security forces that they did not use live bullets and that the man had been killed by “counter-revolutionaries” (armed dissidents), the state news agency IRNA reported.