President Yoon Suk-yeol speaks during a Cabinet meeting at the presidential office in Seoul, Nov. 1. Yonhap

President Yoon Suk-yeol thanked U.S. President Joe Biden and other foreign leaders Tuesday for their condolences over the Halloween crowd crush, saying the government will provide the same assistance to local and foreign victims of the tragedy.

Yoon expressed his thanks during a Cabinet meeting held three days after the incident. At least 156 people, including 26 foreign nationals, were killed during the crowd surge in the popular nightlife district of Itaewon on Saturday.

"U.S. President Biden, Japanese Prime Minister Kishida, Chinese President Xi Jinping and other foreign leaders sent their deep condolences," Yoon said. "On behalf of our people, I would like to deeply thank the foreign leaders and people for their warm consolation."

"We will do our best to assist the foreign casualties in the same way as our own people," he added.

The 26 foreign victims include five from Iran, four each from China and Russia, two from the United States, two from Japan, and one each from France, Australia, Norway, Austria, Vietnam, Thailand, Kazakhstan, Uzbekistan, and Sri Lanka, officials said.

President Yoon Suk-yeol signs a condolence book at a mourning altar for victims of the Itaewon crowd crush near Noksapyeong Station in Seoul, Nov. 1. Yonhap

The incident was the deadliest crowd crush in Korea's history and the worst disaster the country has seen since 2014, when the ferry Sewol sank in waters off the south coast and killed 304 people, mostly high school students.

Yoon called for fundamental measures to prevent a repeat of the tragedy, saying it clearly revealed the importance of crowd management, and the serious lack of systematic research and development related to the subject in the country.

"We need to actively use drones and other advanced digital capabilities to develop crowd management technologies and make the necessary institutional improvements," he said. "Rather than nitpicking about whether the event had an organizer or not, it's the people's safety that's important, and we need to come up with thorough measures."

Yoon said he will soon hold a meeting with relevant ministers and experts to review the national safety system. He once again thanked the people, medical workers, firefighters, police officers and all others who came to the aid of the victims by performing CPR and transporting them to hospitals, and the nation for sharing in the grief.

"I am emphasizing this again, but the top priority in state affairs is handling the aftermath of this accident and taking follow-up measures," he said, once again extending his condolences to the victims and their families, and wishing a speedy recovery for the injured.

Yoon later visited a mourning altar for the victims at Noksapyeong Station near the site of the accident. He was joined by members of the Cabinet and the presidential office.

It was Yoon's second visit to a mourning altar after he visited an altar in front of City Hall with first lady Kim Keon-hee on Monday.

"My sadness and grief are beyond my control. I will do my best to prevent such a tragedy from happening again," Yoon wrote in a condolence book after paying his respects.

Yoon then walked to Exit No. 1 of Itaewon Station where flowers of mourning have been laid alongside photos of the victims, drinks, snacks and other items enjoyed by young people. More than 100 of those killed were in their 20s.

Yoon placed a chrysanthemum on the pile and offered a silent prayer before walking over to the adjacent alley where the crush took place.

The president had also inspected the alley Sunday. (Yonhap)