More than 13,000 civilians in Colombia have had to flee clashes between armed groups and government forces this year as violence once again flares in the restive country, according to a report to the UN Security Council. "The situation in the Pacific region is especially worrying," UN Secretary General Antonio Guterres said in the report, which was obtained by AFP on Friday. Colombia is currently experiencing the worst violence the country has seen since the 2016 peace accord between Bogota and the Revolutionary Armed Forces of Colombia (FARC) group ended a half-century civil war. Some guerrilla fighters refused to join that peace process, and have continued their struggle, while also mixing with drug-traffickers in lawless areas of Colombia.