The parade started at 10 p.m. local time in Pyongyang after state media urged people and armed forces to pledge “absolute loyalty” to Kim Jong-un.
North Korea has reportedly held a military parade in Pyongyang to mark the creation of its army – a notable national holiday.
The parade started Monday at 10 p.m. local time (13:00 GMT), South Korea’s Yonhap news agency reported, citing an “informed source”.
NK News, a US-based outlet, noted that the main Kim Il Sung square in the capital had been busy and roads were closed, while illuminated objects could be seen in the sky above the city at night. The parade ended with a fireworks display after about 90 minutes, it said.
There was no mention of a parade in the state media and it was not immediately known whether North Korean leader Kim Jong Un was present at the event.
Pyongyang has conducted a series of weapons tests since the beginning of the year, including the first intercontinental ballistic missile (ICBM) launch in nearly five years.
The country usually marks important anniversaries with a display of power and was widely expected to hold a military parade on April 15 to mark the 110th anniversary of the birth of the country’s founder and Kim’s grandfather, Kim Il Sung.
The event celebrated that day with a massive celebration of dancing, singing and fireworks, but satellite images revealed what appeared to be rehearsals for a parade of thousands of troops at a training ground near the capital.
Ahead of Monday’s parade, state media urged citizens and armed forces to pledge their “absolute loyalty” to Kim.
“We must more thoroughly establish the revolutionary discipline and order, in which the Party, the nation and the people move in unity under the leadership of the Central Party, with the ideologies and intentions of our respected and beloved Secretary General boiling in our hearts, it said.
Since Kim took control of the country after his father’s death just over 10 years ago, North Korea has held 12 major military parades for national celebrations.