The bombings came as the country was already on edge after the attempted assassination of a presidential candidate in Bogotá.
Southwest Colombia was rocked by a string of explosions and gun attacks that left at least four people dead on Tuesday, police said, in what appeared to be a coordinated wave of attacks designed to sow terror.
It was not immediately clear who was behind the attacks, but guerillas who broke away from the once-powerful Farc rebel army are known to operate in that part of Colombia.
The attacks hit Cali – the country’s third largest city – and several nearby towns, targeting police stations and other municipal buildings.
The National Police chief, Carlos Fernando Triana, told La FM radio that assailants had attacked targets with car bombs, motorcycle bombs, rifle fire and a suspected drone.
