Last Thursday, presidential hopeful Miguel Uribe Turbay warned that Colombia was fast sinking back into its violent past. Two days later, a gunman shot him in the head during a rally.

Colombian senator Miguel Uribe, a potential presidential contender, remains in critical condition and has shown little response to treatment after being shot in Bogota on Saturday, the hospital treating him said on Monday.

The brazen attack, captured on video, recalled the political violence of past decades. The senator arrived at a hospital in critical condition.