North Korea vows to block border with South Korea and build front-line defense structures

SEOUL, South Korea (AP) — North Korea said Wednesday it will permanently block its border with South Korea and build front-line defense structures to cope with “confrontational hysteria" by South Korean and U.S. forces, while not announcing an expected constitutional revision to formally designate South Korea its principal enemy and codify new national borders.

While the moves were likely a pressure tactic, it's unclear how they will affect ties with South Korea since cross-border travel and exchanges have been halted for years.

North Korea's military said it will “completely cut off roads and railways ” linked to South Korea and “fortify the relevant areas of our side with strong defense structures,” according to the North's official Korean Central News Agency.

The North's military called its steps a “self-defensive measure for inhibiting war and defending the security” of North Korea. It said that “the hostile forces are getting ever more reckless in their confrontational hysteria.” It cited what it called various war exercises in South Korea, the deployment of U.S. strategic assets and its rivals' harsh rhetoric.

South Korea’s military said later Wednesday that it won’t tolerate any attempt by North Korea to change the status quo. It said South Korea will “overwhelmingly punish” North Korea if it launches provocations. A South Korean military statement said North Korea’s nuclear and missile programs have threatened peace on the Korean Peninsula.

South Korean officials earlier said North Korea had already been adding anti-tank barriers and reinforcing roads on its side of the border since April in a likely attempt to boost its front-line security posture and prevent its soldiers and citizens from defecting to South Korea. In a report to parliament on Tuesday, South Korea's Unification Ministry said that North Korea has been removing ties on the northern side of cross-border railways and nearby lamps and planting mines along the border.

KCNA earlier Wednesday said the Supreme People’s Assembly met for two days this week to amend the legal ages of North Koreans for working and participating in elections. But it didn't say whether the meeting dealt with leader Kim Jong Un's order in January to rewrite the constitution to remove the goal of a peaceful Korean unification, formally designate South Korea as the country’s “invariable principal enemy” and define the North’s sovereign, territorial sphere.

At the center of outside attention was whether North Korea makes new legal claims on the waters currently controlled by South Korea off their west coast. The poorly marked western sea boundary is where three bloody naval skirmishes and two deadly attacks blamed on North Korea happened in the past 25 years.

Some experts say North Korea might have delayed the constitutional revision but others speculated it amended the constitution without announcing it because of its sensitivity.

Kim's order stunned many North Korea watchers because it was seen as breaking away with his predecessors' long-cherished dreams of achieving a unified Korea on the North's terms. Experts say Kim likely aims to diminish South Korea’s voice in the regional nuclear standoff and seek direct dealings with the U.S. They say Kim also likely hopes to diminish South Korean cultural influence and bolster his rule at home.

Tensions on the Korean Peninsula are at their highest point in years, with North Korea continuing a run of provocative weapons tests and South Korea and the U.S. expanding their military drills. KCNA said North Korea on Tuesday tested a long-range artillery system that observers say pose a direct threat to Seoul, the South Korean capital, which is only an hour’s drive from the border.

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Visitors watch North Korean side from the Unification Observation Post in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

North Korean soldiers stand at the North's military guard post, seen from Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A visitor watches North Korean side from the Unification Observation Post in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A North Korean flag is seen in North Korea's town Kaepoong, seen from Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A South Korean national flag flutters in the wind at the Unification Observation Post in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A visitor walks past a signboard showing the distance to North Korea's capital Pyongyang and to South Korea's capital Seoul from Imjingang Station in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A North Korean flag flutters in the wind atop a 160-meter (525-foot) tower in the North's Kijong-dong village near the truce village of Panmunjom, seen from Paju, South Korea, near the border with North Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

In this photo provided Wednesday, Oct. 9, 2024, by the North Korean government, assembly members attend the Supreme People’s Assembly at the Mansudae Assembly Hall in Pyongyang, North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

Barricades are placed near the Unification Bridge, which leads to the Panmunjom in the Demilitarized Zone in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

In this photo provided Wednesday, Oct. 9, 2024, by the North Korean government, Choe Ryong Hae, the chairman of the Assembly’s Standing Committee, speaks during the Supreme People’s Assembly in Pyongyang, North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

In this undated photo provided on Saturday, Oct. 6, 2024 by the North Korean government, North Korean leader Kim Jong Un, center, watches an artillery exercise at an undisclosed place in North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

In this undated photo provided on Saturday, Oct. 6, 2024 by the North Korean government, North Korean leader Kim Jong Un, center, visits to watch an artillery exercise at an undisclosed place in North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

DENVER (AP) — A Frontier Airlines plane hit and killed a pedestrian on the runway of the Denver International Airport during takeoff, airport authorities said, sparking an engine fire and forcing passengers to evacuate.

The plane, on route from Denver to Los Angeles International Airport, “reported striking a pedestrian during takeoff at DEN at approximately 11:19 p.m. on Friday," the airport's official X account wrote.

A spokesperson for the airport said the pedestrian, who jumped a perimeter fence, has died. They said the unidentified person was hit two minutes after entering the airport. The person is not believed to be an airport employee.

“We're stopping on the runway,” the pilot tells the control tower according to the site ATC.com. “We just hit somebody. We have an engine fire.”

The pilot tells the air traffic controller they have “231 souls” on board and that an “individual was walking across the runway.”

The air traffic controller responds that they are “rolling the trucks now" before the pilot tells the tower they “have smoke in the aircraft. We are going to evacuate on the runway.”

Frontier Airlines said in a statement flight 4345 was the one involved in the collision and that “smoke was reported in the cabin and the pilots aborted takeoff.” It was not clear whether the smoke was linked to the crash with the pedestrian.

“The Airbus A321 was carrying 224 passengers and seven crew members,” the airline said. “We are investigating this incident and gathering more information in coordination with the airport and other safety authorities.”

Passengers were then evacuated via slides and the emergency crew bused them to the terminal. The airport spokesperson said 12 passengers suffered minor injuries and five were taken to local hospitals.

Denver Airport said the National Transportation Safety Board had been notified and that runway 17L, where the incident took place, will remain closed while an investigation is conducted. It is expected to open later today.

The pedestrian death came a day after a Delta Air Lines employee was killed while on the job at the Orlando International Airport. In a statement, the airline said the employee was killed Thursday night without providing details of the incident nor the name of the employee.

“We are focused on extending our full support to family and taking care of our Orlando team during this difficult time,” the airline said. "We are working with local authorities as a full investigation gets underway to determine what occurred.”

FILE - A Frontier Airlines jetliner taxis down a runway for take off from Denver International airport on Nov. 25, 2025, in Denver. (AP Photo/David Zalubowski, File)