CORINTO, COLOMBIA (AFP)
Southwest Colombia was rocked by a string of explosions and gun attacks that left at least four people dead Tuesday, police said, in what appeared to be a coordinated wave of attacks.
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.
The bombings came days after the attempted assassination of a presidential candidate in Bogota, a brazen attack that already had the country on edge.
Conservative senator Miguel Uribe, 39, was shot twice in the head at close range by a 15-year-old alleged hitman while campaigning Saturday.
Thousands have taken to the streets in major cities to light candles, pray and voice their anger at the assassination attempt.
Many Colombians are fearful of a return to the violence of the 1980s and 1990s, when cartel attacks, guerrilla violence and political assassinations were commonplace.