Deadly bomb and drone attacks in two different regions of Colombia were being linked to the government's war on narcotrafficking by former FARC rebels.

A car bomb and a separate attack on a police helicopter in Colombia killed at least 17 people Thursday, according to authorities. President Gustavo Petro attributed both attacks to dissidents of the defunct Revolutionary Armed Forces of Colombia,

At least 18 people have been killed and dozens wounded in two separate attacks in Colombia, deepening the country's most serious security crisis in decades. Six people died and more than 60 were injured after a car bomb exploded on a busy street in the western city of Cali in Colombia, according to authorities.