A North Korean soldier shot while defecting to the South had undergone several surgical procedures and was in a critical condition, South Korea's government and military said on Tuesday, with doctors expecting to save him.
"Until this morning, we heard he had no consciousness and was unable to breathe on his own but his life can be saved," said Suh Uk, a South Korean military official who was briefing lawmakers regarding Monday's event.
Five bullets had been extracted from the soldier's body so far, leaving an estimated two inside, Suh added.
Lee Cook-jong, the surgeon in charge of the soldier's treatment, told reporters earlier on Tuesday his condition was critical due to intestinal damage caused by the bullets.
The soldier had sped towards the border in a vehicle when a wheel came loose, forcing him to escape on foot under fire from North Korean soldiers who shot around 40 rounds at him, Suh said.
North Korea's military took action when the defector was spotted in the four wheel drive heading towards the border alone, Roh Jae-cheon, a spokesman for the South's Joint Chiefs of Staff, said in a media briefing on Tuesday.
The soldier took cover behind a South Korean structure within the Joint Security Area (JSA) inside the demilitarised zone between the two Koreas and was later rescued by South Korean and US soldiers at the border, the United Nations Command (UNC) said in a separate statement.
The Joint Chiefs of Staff official said he was found collapsed in a pile of fallen leaves and the three South Korean soldiers who reached him had to crawl on their stomachs to his position.
He was found unarmed and taken to surgery while still in his uniform, which indicated he held a lower rank, Suh said. South Korean officials have yet to identify exactly where the soldier came from and what his intentions were.
A doctor treating the soldier - who was helicoptered to a hospital for emergency surgery - said he had been shot half-a-dozen times and sustained a serious stomach injury.
"He has at least six gunshot wounds on his body and the penetrating wound in the abdomen is the most serious", the doctor, Lee Cook-Jong, told reporters.
The military armistice commission of the United Nations said in the same UNC statement it had informed the North Korean military that the soldier, who was found about 50 metres (150 feet) south of the Military Demarcation Line, was undergoing surgery for his gunshot wounds.
Suh also said the South had later informed the North on Monday of the soldier and his ongoing treatment via loudspeakers installed at the border.
The United Nations Command said an investigation into Monday's event was ongoing.
No tourists were present at the time, because tours do not run on Mondays.
It was the first time since 2007 a North Korean soldier had defected across the JSA. South Korean Defence Minister Song Young-moo, who was also at parliament said it was the first time North Korean soldiers had fired towards the South's side of the JSA, prompting complaints from some lawmakers the South's military should have also fired shots towards the North.
Roh said no South Korean or US soldiers were wounded during the incident and the defence ministry official said North Korea's military had not shown any unusual movements on Tuesday.
In 1984, a Soviet citizen sprinted across the border from North Korea to the South at Panmunjom in a defection bid, sparking a gunbattle that killed and wounded several soldiers on both sides.
North Korean soldiers wielding axes hacked two US soldiers to death at Panmunjom in a 1976 brawl over an attempt to trim a tree there.