Colombian President Gustavo Petro has signed a controversial labor reform into law, delivering a significant increase in worker protections.

Colombian authorities have charged a 15-year-old with attempted murder for the assasination attempt on Miguel Uribe, the conservative presidential candidate who was shot in the head this weekend and is now in critical condition.

At least four people were killed in Colombia as rebel groups detonated bombs near police stations in the city of Cali and the neighboring Cauca province, according to Colombian authorities.

Colombian conservative presidential hopeful Miguel Uribe is in critical condition after being shot in the head during an assassination attempt over the weekend.