Eleven Colombian military personnel were missing and six injured after a helicopter crashed during a guerrilla operation in the southeast of the country, the army said on Tuesday.
The Blackhawk helicopter carried 17 military personnel when it crashed. The Armed Forces High Command did not disclose whether it was shot down or an accident.
The authorities found the helicopter in a section of the Inirida River in Guaviare State, an area where guerrillas of the Colombian Revolutionary Armed Forces (FARC) are active.
The FARC rebels laid down their arms in a historic peace agreement of 2016 that ended half a century of conflict and made the guerrillas a communist political party.
However, according to authorities, more than 2,000 dissidents refused to join the 13,000 rebels who signed the peace agreement, and continued to oppose the government by funding themselves through drug trafficking and illegal mining.
The army said the helicopter participated in an operation against dissidents in an area where there are drug plantations.
The Army Air Attack Department said in a statement that it was "on site and is beginning investigations to determine the timing, nature, and location of the events."
The conflict of more than half a century has killed, missed or displaced nine million people.
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