A military transport plane carrying 110 soldiers has been involved in an "accident" in Colombia, local media have reported.
Around 57 people have been rescued alive, sources told Reuters. It still leaves more than 50 people unaccounted for.
The country's defence minister Pedro Anulfo Sanchez said on Monday the Lockheed Martin Hercules C-130 plane had "suffered a tragic accident".
Mr Sanchez said he hoped the prayers of Colombians would help alleviate the "pain" of the families of the victims.
President Gustavo Petro also weighed in - criticising obstacles for blocking his plans to modernise the military.
Colombia began buying C-130 planes as far back as the 1960s.
Mr Petro said in a post on X: "I hope there are no fatalities in this horrific accident that should never have happened.
"I will grant no further delays; it is the lives of our young people that are at stake.
"If civilian or military administrative officials are not up to this challenge, they must be removed."
There are some discrepancies over the number of people rescued - with local media claiming the figure is as high as 67.
The aircraft was taking off from an airport deep in Colombia's southern Amazon region, on the border with Peru.
The crash occurred just two miles from a busy urban centre, local media BluRadio claim.
Footage purporting to show the crash shows a military plane taking off over dense rainforest, before slowly descending back towards the ground.
Another clip shows locals transporting injures soldiers to safety on the back of their motorbikes.
Mr Sanchez said, in a translated X post: "With deep sorrow, I report that a Hercules aircraft from our [Colombian Aerospace Force] suffered a tragic accident while taking off from Puerto Leguízamo (Putumayo), while transporting troops from our Public Force.
"Military units are already at the scene; however, the number of victims and the causes of the accident have not yet been precisely determined.
"All protocols for assisting the victims and their families have been activated, as well as the corresponding investigation.
"I express my sincerest condolences to the families of those affected and, out of respect for their grief, I urge everyone to avoid speculation until official information is available.
"This is a profoundly painful event for the country."
The Lockheed Martin C-130 Hercules is used by militaries across the world.
They were first launched in the 1950s and Colombia acquired its first models in the late 1960s.
Last month, another C-130 belonging to the Bolivian Air Force crashed in the city of Alto, killing 20 and injuring another 30.
Banknotes from the plane's cargo scattered around the city - prompting clashes between residents and security forces.
It is also the second plane crash to make headlines in Colombia this year - back in January a small passenger plane crashed in the north of the country.
All 15 people on board, including a congressman, were killed.
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(c) Sky News 2026: Military plane 'carrying 110 soldiers' involved in accident in Colombia

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