Brussels -- The crackdown on protesters in Iran has prompted an outcry among European leaders, with High Representative Kaja Kallas denouncing Tehran for its "disproportionate" and "heavy-handed" response.

The European Union has sharply condemned the crackdown on protesters in Iran who have taken to the streets to show their discontent over the Islamic Republic.

"The Iranian people are fighting for their future. By ignoring their rightful demands, the regime shows its true colours," High Representative Kaja Kallas said on Friday. 

"Images from Tehran reveal a disproportionate and heavy-handed response by the security forces. Any violence against peaceful demonstrators is unacceptable."

Separately, the European Commission denounced "the increasing number of deaths and injuries" and demanded respect for the right of peaceful assembly.

"The people of Iran are expressing their legitimate aspiration for a better life," a Commission spokesperson said during the daily briefing with journalists.

Asked whether the Commission was in favour of regime change as a result of the widespread demonstrations, the spokesperson noted that "regime change has not been part of our EU consolidated policy vis-à-vis Iran".