At least 20 killed during clashes in Colombia

At least 20 people were killed and 50 others remain missing following clashes which broke out on Sunday in several cities in Colombia's Arauca in what officials said were the most violent clashes in the last 10 years in the department, local media reported on Monday.

The confrontations were between members of the National Liberation Army (ELN) and the Revolutionary Armed Forces of Colombia (FARC).