Police said he was hit by a speaker that fell from atop a police bus. It is yet unclear why the speaker fell.

He was rushed to a hospital but was pronounced dead there at around 1:50 p.m., according to police.

The other man, also surnamed Kim, 66, was found unconscious at a subway station near the court at around 12:15 p.m., police said.

Police are investigating the details of the incidents.

There are two more people who are in critical condition, police said.

The clash began immediately after the verdict was delivered.

Park's supporters tried to march toward the court after chief justice Lee Jung-mi read out the televised ruling. They shouted "Let's destroy the Constitutional Court!"

The protest became violent as some used makeshift weapons, such as wooden sticks, to fight against police. They swarmed to police buses that barred them from approaching the court.

Some journalists were physically assaulted in the process.

Police said seven of their officers were transferred to hospitals for minor injuries.

Police tightened security near the Constitutional Court and other government offices, including the presidential office Cheong Wa Dae, for contingencies.

They have surrounded the court with police buses and mobilized some 21,600 officers to stand guard.

The rally organizer said their protest will continue overnight.

The Ministry of Justice also held an emergency meeting among senior officials right after the ruling.

"Illegal violent rallies or other illicit acts such as spreading false information that could cause anxiety among public should be strictly dealt with," acting justice minister Lee Chang-jae was quoted by the ministry as saying. (Yonhap)