A bomb attack on a highway in southwestern Colombia has left at least 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. 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