Iranian President Ebrahim Raisi and the country's foreign minister, Hossein Amir Abdollahian, were declared dead Monday in a helicopter crash, Iranian state media reported.

There were other senior officials on the helicopter, though no survivors had been found at the site of the crash for now, according to the Islamic Republic News Agency. #iranpresident #ebrahimraisi #helicopter

Earlier, IRNA reported that the president of the Iranian Red Crescent Society confirmed that rescue and search teams had identified Raisi's crashed helicopter. The aircraft carrying Raisi, Amir Abdollahian and other senior officials went down in a mountainous part of northwestern Iran as they returned from an event along Iran's border with Azerbaijan.

On Sunday, Iran's Interior Minister, Ahmad Vahidi, confirmed the "hard landing" of the president's helicopter and said the search-and-rescue operation is underway, according to IRNA.

"Various rescue groups are moving towards the site, but due to the fog and bad weather, it may take time to reach the area. The work is under control," Vahidi said.

"There have been contacts with the president's companions, but given that the area is mountainous and it is difficult to establish contacts, we hope that the rescue teams will reach the site of the incident sooner and give us more information," he added.

IRNA reported that two passengers on the flight had communicated with rescue workers.

Twenty rescue teams, including drones and dogs, had been sent to the scene, and the Iranian military had also deployed troops to assist in the rescue effort.