In that area, FARC dissidents and the Clan del Golfo (Gulf Clan) operate,” he wrote. According to early intelligence reports, the attack was attributed to the 36th Front of the FARC dissidents. Military officials said the bombing may have been retaliation by FARC dissidents for operations in the Micay Canyon, a strategic corridor for drug trafficking in southwestern Colombia. Those incidents were attributed to the Jaime Martínez front, another faction of FARC dissidents. Authorities warned that casualty figures could rise as investigations continue in both Antioquia and Cali.