At least 35 people have died, and more than 1,200 have been detained in ongoing economic protests across Iran, activists reported on Tuesday. According to the US-based Human Rights Activists News Agency, the demonstrations have been continuing for over a week.

Of those killed, 29 were protesters, along with four children and two members of Iran's security forces. The agency, which relies on an activist network inside Iran for its reporting, has been accurate in previous unrest situations.

The semi-official Fars news agency, which is believed to have close ties with Iran’s paramilitary Revolutionary Guard, reported late Monday that around 250 police officers and 45 members of the Guard’s all-volunteer Basij force were injured during the demonstrations.

In response to the situation, India on Monday issued an advisory urging its nationals to avoid non-essential travel to Iran due to the ongoing protests triggered by inflation and the devaluation of the Iranian currency.

"In view of recent developments, Indian nationals are advised to avoid non-essential travel to the Islamic Republic of Iran until further notice," the Ministry of External Affairs (MEA) said.

The MEA further advised Indian citizens and Persons of Indian Origin (PIOs) currently in Iran to exercise caution, avoid areas where protests or demonstrations are taking place, and closely monitor news as well as the embassy’s website and social media handles in Tehran.

"Indian citizens and PIOs (Persons of Indian Origin), currently in Iran, should exercise due caution, avoid areas of protests or demonstrations, and closely monitor news as well as the website and social media handles of the embassy of India in Tehran," the advisory added.

The ministry also recommended that Indian nationals living in Iran on resident visas register with the embassy if they had not already done so.

The protests, which began around nine days ago in Tehran, have now spread to 25 out of Iran’s 31 provinces, with reports of more than ten deaths in some areas. The demonstrations were triggered by a sharp fall in the value of the Iranian rial against the US dollar.

Last week, US President Donald Trump warned Iran against cracking down on protesters. "We are locked and loaded and ready to go," he said in a post on social media without giving further details.

Trump also added on Sunday night, "Iran would be hit very hard if more protesters died. We're watching it very closely. If they start killing people like they have in the past, I think they're going to get hit very hard by the United States."

The situation remains tense as protests continue across the country, and both local authorities and international governments are monitoring developments closely.