Explosion in Bogota shopping center kills three, wounds nine

A peace accord signed last year with the Revolutionary Armed Forces of Colombia (FARC), the country's biggest guerrilla group, raised confidence bomb attacks might cease.

The country's second-largest insurgent group, the National Liberation Army (ELN), in February exploded a bomb in Bogota, injuring dozens of police.

The Marxist ELN, currently negotiating peace with the government, in a tweet condemned the attack against civilians.

Authorities said there have been threats of attacks in Bogota by the so-called Gulf Clan, a group of former right-wing paramilitary fighters who traffic drugs.