At least 18 people have been killed and dozens injured in two attacks in Colombia attributed to dissident factions of the former Revolutionary Armed Forces of Colombia (FARC) rebel group.

In Cali, the country’s third most populated city, a vehicle packed with explosives detonated on Thursday near a military aviation school, in an incident that left six people dead and 71 injured, according to the mayor’s office.

Hours earlier, a National Police Black Hawk helicopter participating in a coca leaf crop eradication operation was downed by a drone in the municipality of Amalfi, in the department of Antioquia, killing 12 police officers.

Colombian President Gustavo Petro blamed the attacks on dissident factions of the now-defunct FARC group that have rejected a 2016 peace agreement to end a prolonged internal conflict that has left more than 450,000 dead in the country.

Petro said on X that the attack on the police helicopter occurred as the aircraft was transporting personnel to an area in Antioquia, in northern Colombia, to eradicate coca leaf crops, the raw material for cocaine.

Antioquia Governor Andres Julian said on social media that a drone attacked the helicopter as it flew over coca leaf crops.

Colombian Defence Minister Pedro Sanchez said that preliminary information indicates the attack caused a fire in the police helicopter.

Petro initially blamed the Gulf Clan, the country’s largest active drug cartel, for the helicopter attack. He asserted that the aircraft was targeted in retaliation for a cocaine seizure that allegedly belonged to the group.

In a later post on social media, Petro shared a photo of a suspect in the car bomb attack near the Colombian Aerospace Force in Cali, saying the person detained by police was a member of the EMC (Estado Mayor Central) – described as a federation of dissidents of the former FARC group – and “subordinate” to drug traffickers.