A Lockheed Martin Hercules C-130 aircraft crashed in the southern part of Colombia, the country’s defense ministry said. A local radio outlet reported 110 passengers were aboard, and 90 officers were confirmed dead amid a mounting death toll.

The accident occurred when the plane took off from Puerto Leguizamo, deep in the country’s south near the Peruvian border, according to Defense Minister Pedro Sanchez. The military aircraft was transporting troops from Colombia’s military.

“The exact number of victims and the causes of the crash have not yet been determined,” he said.

According to a local radio report, the crash occurred 3 kilometers from an urban area. According to the report, 110 passengers were aboard the plane when it crashed.