Pro-regime demonstrators in Iran chanted "death to America" and held signs calling for the assassination of President Donald Trump, images from Iranian state television showed Thursday.

The footage came from an event held at Tehran University and organized by the government. Several protesters held photos of Ayatollah Ali Khamenei, while some brought makeshift signs featuring photos of Trump after the failed assassination attempt against him in Pennsylvania.

Multiple of those signs featured Arabic text translating to "This time there will be no error."

Another sign showed the same photo with a caption in English, "The arrow doesn't always miss."

IRAN REGIME OPENED FIRE WITH LIVE AMMUNITION ON PROTESTERS, DOCTOR SAYS: ‘SHOOT-TO-KILL’

The protest event comes as the Iranian regime contends with widespread unrest thanks to the country's economic crisis.

Humanitarian groups estimate that Iranian forces have killed over 2,000 protesters, though the true number could be far higher.

Iran appeared to reopen its airspace on Thursday after a sudden overnight closure disrupted flights across the region.

IRAN SHUTS DOWN AIRSPACE, FOREIGN OFFICIALS WARN AGAINST TRAVEL TO ISRAEL

The overnight closure lasted around five hours after a Notice to Air Missions, or NOTAM, was issued, according to the aviation risk-monitoring site Safe Airspace. 

President Donald Trump told reporters in the Oval Office on Wednesday that he was informed the killing of protesters in Iran was "stopping."

"We have been notified and really strongly, but we'll find out what that all means. But, we've been told that the killing in Iran is stopping," he said.

IRAN ALLEGEDLY AIRS 97 'COERCIVE CONFESSIONS' AMID RECORD-BREAKING NORTH KOREA-STYLE INTERNET BLACKOUT

The U.S.-based Human Rights Activists News Agency (HRANA), which tracks human rights violations in Iran, said on Wednesday that nationwide protests continued into the 18th day as authorities maintained a near-total internet shutdown.

The group's aggregated figures showed 617 protest gatherings in 187 cities across the country, the arrest of at least 18,470 people and the confirmed deaths of 2,615 individuals.

HRANA said 2,435 of those killed were protesters, including 13 children under the age of 18.

Trump has threatened action against the regime, warning Tehran in multiple Truth Social posts to stop killing its people.

"We are locked and loaded and ready to go," he wrote on New Year’s Day.

Fox News' Ashley Carnahan contributed to this report.

Troops from several European countries deployed to Greenland and are on the ground there Thursday for a quick 2-day mission to bolster the territory’s defenses. 

France, Germany, Sweden and Norway are participating in the exercise, Fox News has learned. Leaders say the mission is meant to demonstrate they can deploy military assets "quickly." 

The development comes as the Trump administration is pushing to acquire the Danish territory. Germany deployed a reconnaissance team of 13 personnel, France sent 15 mountain specialists and Sweden, Norway and Britain sent three, two and one officers, respectively, according to Reuters. 

"The geopolitical tensions have spread to the Arctic. The Government of Greenland, and the Danish Ministry of Defense have therefore decided to continue the Danish Armed Forces’ increased exercise activity in Greenland, in close cooperation with NATO allies," the Danish Ministry of Defense said in a statement Wednesday. 

"From today, there will be an expanded military presence in and around Greenland — in close cooperation with NATO allies. The purpose is to train the ability to operate under the unique Arctic conditions and to strengthen the alliance’s footprint in the Arctic, benefiting both European and transatlantic security," it added.

"As part of the increased presence in the Arctic and North Atlantic, the Danish Armed Forces are, from today, deploying capabilities and units related to the exercise activities. In the period ahead, this will result in an increased military presence in and around Greenland, comprising aircraft, vessels and soldiers, including from NATO allies," the Danish Ministry of Defense also said. 

It said the exercise activities in 2026 "could include guarding critical infrastructure, providing assistance to local authorities in Greenland, including the police, receiving allied troops, deploying fighter aircraft in and around Greenland, and conducting naval operations." 

"Some officers from the Swedish Armed Forces are arriving in Greenland today," Swedish Prime Minister Ulf Kristersson wrote on X on Wednesday. "They are part of a group from several allied countries. Together they will prepare upcoming steps within the framework of the Danish exercise Operation Arctic Endurance. It is at the request of Denmark that Sweden is sending personnel from the Armed Forces." 

Danish Prime Minister Mette Frederiksen told Reuters on Thursday that, "The American ambition to take over Greenland is intact."

"That is of course serious, and therefore we continue our efforts to prevent this scenario becoming a reality," he added. 

Danish Foreign Minister Lars Lokke Rasmussen and Greenlandic Foreign Minister Vivian Motzfeldt met with Secretary of State Marco Rubio and Vice President JD Vance at the White House on Wednesday. 

This is a developing news story. Please check back for updates.