Colombia endured one of its bloodiest days in recent months on Thursday after a police helicopter was shot down in Antioquia and a car bomb ripped through the city of Cali, killing at least 13 people and injuring dozens more.

A police helicopter attack in Colombia's Antioquia region has left 12 officers dead. Colombian President Gustavo Petro blames FARC dissidents for the drone strike.

Easy to access and employ, weaponized drones pose a rapidly increasing threat to combat helicopters around the globe.

Dramatic scenes from Colombia show a police helicopter crashing into a mountain after reportedly being struck by a drone, just hours after a deadly car bomb explosion rocked a military air base in Cali.

A car bomb and a separate attack on a police helicopter in Colombia killed at least 17 people on Thursday, according to authorities.