At least 66 people were killed and dozens more injured when a Colombian military plane crashed shortly after takeoff Monday morning in Putumayo province, according to PEOPLE.

The C-130 Hercules aircraft went down around 9:54 a.m. local time after departing from Puerto Leguízamo, according to a news release.

The plane was carrying 128 people, including 115 army soldiers, 11 crew members and two national police officers, according to the Associated Press.

Hugo Alejandro López Barreto, head of Colombia’s armed forces, confirmed the death toll and said 57 people were evacuated from the scene while four military personnel remained missing.

“Sadly, as a consequence of this tragic accident, 66 of our military elements died,” Barreto said, according to the AP. “At the moment, we have no information or indications that it was an attack by an illegal armed group.”

Pedro Sánchez confirmed the crash in a post on X.

“With deep sorrow, I report that a Hercules aircraft from our @FuerzaAereaCol suffered a tragic accident while taking off from Puerto Leguízamo (Putumayo), as it was transporting troops from our Public Force,” he wrote.

Colombia’s Air Force identified six of its members among the dead.

Carlos Fernando Silva said the aircraft “had a problem and went down about two kilometers from the airport,” according to the AP.

The cause of the crash remains under investigation.

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