Security officials are seen at President Yoon Suk Yeol's residential compound in Hannam-dong, Seoul, Tuesday. Newsis

Investigators are poised to make a second attempt to execute a warant to detain President Yoon Suk Yeol as Korea's anti-corruption agency vowed to take all possible measures to take him into custody, according to officials and political watchers, Tuesday.

There has been growing speculation that investigators will take action in the coming days, as early as Wednesday, after their first failed bid early this month.

After a meeting on Tuesday between the Corruption Investigation Office for High-Ranking Officials (CIO), police, and the Presidential Security Service (PSS) to discuss a peaceful enforcement of the warrant, a CIO official told reporters that the discussions would not impact their plan to detain Yoon as part of their investigation into his imposition of martial law.

"People expressed opinions that the warrant should be executed peacefully. But there was no compromise reached," the official said. "What was discussed at the meeting won't affect the [CIO's] plan to execute the warrant."

The three-way meeting took place amid a weekslong standoff between the investigators and the PSS over the execution of the detention warrant.

After facing stronger-than-expected resistance from the PSS on Jan. 3, the joint probe team of the CIO, police, and defense ministry plans to implement more forceful measures this time.

With no signs of compromise, concerns are rising about possible violent clashes between authorities enforcing the detention warrant and the presidential security officers.

In a statement released on Tuesday, the PSS reaffirmed that it would block any attempt to access the presidential residence, which must be protected for national security reasons.

"Certain security zones, including the presidential residence, are guarded areas and require prior authorization to enter," it said. "Forced entry without prior authorization is illegal and illegal enforcement will be handled in accordance with the security manual under the law."

Several hours before the meeting, Chung Jin-suk, Yoon's chief of staff, pleaded with the CIO and police to abandon their attempt to detain the president by force and stop treating him like a member of what he called a "South American drug cartel."

In a statement, Chung said Yoon could be questioned at his residential compound or a third site other than the CIO headquarters or a police station.

"What concerns me most is the possibility of violent clashes between the armed police and presidential bodyguards. If state institutions clash, there can be no intervention or mediation. Additionally, thousands of citizens are gathered near the presidential residence to protect him," he said. "If the police clash with the citizens, an unimaginable tragedy could occur."

However, Yoon Kap-keun, one of the president's attorneys, said Chung issued the message without coordinating with them in advance and that Yoon has no plan to be questioned by the CIO, which they argue has no legal basis to investigate him.

Supporters of President Yoon Suk Yeol hold a rally near his residential compound in Hannam-dong, Seoul, Tuesday. Newsis

Acting President Choi Sang-mok also expressed concerns about possible clashes, saying on Monday that all law enforcement activities should be carried out peacefully and cautiously. However, it remains uncertain whether his direction will influence the investigators' strategy, as they appear determined to detain Yoon this time by any means necessary.

Police held another meeting of field commanders on Tuesday in the capital area to map out their warrant execution plan.

To ensure the success of the second attempt to detain the president, the CIO and police are said to have planned to mobilize around 1,000 investigators for what could become a multiday operation.

A police official told reporters on Monday that investigators will detain on charges of obstruction of justice anyone trying to block them from detaining the president.

After the first botched attempt to detain Yoon, his residential compound and the surrounding areas have been further fortified with barbed wire and rows of vehicles blocking access.

The defense ministry said it will not mobilize military personnel on guard duty at the presidential residence, amid concerns that they could be deployed to stop the investigators.

According to the CIO, the military unit responsible for guarding the perimeter of the presidential compound said it would allow investigators from the CIO, police and the Ministry of National Defense to access the area.

However, the ministry and the PSS denied the claim, saying that obtaining such access requires final approval from the security service.