Saudi Arabia, the USA and Britain are major players behind the anti-government protests in Iran, an official said on Tuesday.
An 11-year-old boy and a 20-year-old man were killed in the town of Khomeinishahr, while a member of Iran's paramilitary Revolutionary Guard was killed in the town of Najafabad.
"Certainly, the great Iranian nation has closely pursued Mr. Trump's active partnership in violating the Palestinian, Yemeni and Bahraini people's human rights" and remember his hostile approach towards Iranians' visit to the United States, he added. It's not clear if those are the same two deaths reported elsewhere.
The European Union on Monday pushed Iran to guarantee the right to protest and separately British Foreign Secretary Boris Johnson said "the United Kingdom is watching events in Iran closely".
Trump has been a sharp critic of Iran and the nuclear deal the country signed in 2015 with the USA and other world powers.
Israel's prime minister wishes protesters in Iran "success in their noble quest for freedom".
Reporting restrictions remained tight, but videos on social media continued to show widespread anti-government protests in many areas.
He criticized the Iranian regime's response to the protests and also chided European governments for watching "in silence" as the protests turn violent.
The demonstrations, the largest to strike Iran since its disputed 2009 presidential election, have been sparked by anger over the country's flagging economy and a jump in food prices.
Iran is still witnessing a wave of demonstrations, which are being held in many cities across the country. Israeli decision-makers see a nuclear-armed Iran as an existential threat.
According to unconfirmed reports circulated online, between 100 and 800 people have been detained in the protests.
Six protesters were killed in clashes with security forces as they tried to storm a police station in the town of Qahderijan, which has a population of around 30,000.
It did not say where the attacks took place.
Earlier on Monday, it was reported that the number of civilians killed amid the pro-and anti-government demonstrations has grown to 10.
Iranian judiciary chief Ayatollah Sadegh Larijani urged authorities to strongly confront rioters, state TV reported. It was unclear where the others occurred.
Mehr reported a gunman had killed a policeman and wounded three other officers during a protest in the same location - the fist reported fatality among Iran's security forces.
A Monday report by the semi-official ILNA news agency quoted Hedayatollah Khademi, a representative for the town of Izeh, as saying the deaths happened there Sunday night.
He said the cause of death wasn't immediately known, though authorities later described one of the deaths as the result of a personal dispute.
Two other demonstrators were confirmed killed in western Iran late Saturday.