An army helicopter crashed in northern Colombia on Monday, killing all nine soldiers on board, the country's armed forces said.

The crash took place as the helicopter was taking supplies for soldiers to the municipality of Santa Rosa del Sur, a region that has recently experienced fighting between the National Liberation Army guerrilla group and the drug trafficking group known as the Gulf Clan, the Colombian military said in a statement.

The military said that the MI-17 Russian-built chopper crashed around 1:50 p.m. (1850 GMT) local time. The army described the crash as an accident.

"I regret the death of the nine passengers on board the army's helicopter" Colombia's President Gustavo Petro said in a statement posted to X, formerly known as Twitter.

"It was supplying troops that were conducting operations against the Gulf Clan."