A bomb attack on a highway in southwestern Colombia has left 19 people dead, with the authorities blaming a drug lord who was once part of the FARC guerilla group for the attack. At least 38 people — including five children — were injured in the attack on Saturday, which comes a month before the country's presidential election. What do we know? The explosion took place on the Pan-American Highway in the municipality of Cajibio in the Cauca province. According to local media reports, an explosive cylinder fell onto a minibus and detonated. Governor Octavio Guzman described the incident as a "tragedy" and warned of a "terrorist escalation." Visuals shared by Guzman on X showed extensive damage to a number of vehicles. Some cars had been overturned because of the force of the blast. Another image showed a large crater etched into the highway, following the attack.…