BOGOTA: At least four police officers were killed and 42 others wounded Saturday when alleged drug traffickers detonated a remote-controlled bomb at a station in the northern city of Barranquilla, officials said.
The attack was one of the deadliest on security personnel in recent years in one of Colombia's most important cities.
It comes as the government of President Juan Manuel Santos seeks to bring the armed conflict that has wracked Colombia for 50 years to an end. Much of the violence has been financed by drug trafficking.
The bombing also casts a pall over preparations for the annual carnival, a major attraction in the Caribbean port city.
Mariano Botero, the Barranquilla police commander, said that the bomb detonated as the officers gathered for morning formation.
One suspect was captured, he said.
A police source told AFP that 49 officers were at the site when the bomb exploded. Of those, four were killed and 42 were wounded.
The toll is considerably higher than the initial figure of 17 wounded and three killed given by Botero.
Barranquilla Mayor Alejandro Char quickly blamed drug traffickers for the attack.
"I do not have the slightest doubt that this is a retaliation" for successful police action against drug traffickers, he told reporters.
Botero also suggested that the attack could be in revenge after a police crackdown on local drug traffickers.
Colombia is the world's top producer of cocaine, and criminal groups have flooded the country's main cities with drugs in a move known as "microtrafficking."
El Heraldo, the main Barranquilla newspaper, said that some believe the attack may have been aimed at distracting police from an armoured car robbery that took place at the same time.
General Jorge Nieto — the head of Colombia's national police — said he travelled to Barranquilla to offer his support to the blast survivors and their relatives.
He also announced a reward of 50 million pesos ($17.8 million) for information about the attack.
"We strongly condemn this barbaric act and soon we will find those behind it," he said.
President Juan Manuel Santos blasted the "cowardly attack" on Twitter.
"We will not rest until we find those responsible, my solidarity with the families of the victims and the wounded," Santos wrote.
Joining Santos was the presidential candidate of the FARC, the former guerrilla group which is now a leftist political party.
Rodrigo "Timochenko" Londono "vehemently" condemned the Barranquilla attack on Twitter.
"All our solidarity is for the relatives of the slain police," he wrote.
Santos reached a historic peace agreement with the FARC - formerly known as the Revolutionary Armed Forces of Colombia - in November 2016. That led to the rebels' disarmament and transformation into a political party.
The president, who is set to step down in August, is hoping to reach a similar agreement with the smaller National Liberation Army (ELN) guerrillas.