Colombia's police are on maximum alert after detecting plans by radical groups to reject the results of a second presidential election vote on Sunday and commit violence across the country, top cop General Luis Vargas said on Tuesday.
Colombians will go to the polls on Sunday to choose between leftist Gustavo Petro, who has vowed profound economic and social change, and construction magnate Rodolfo Hernandez, a political outsider who has pledged to shrink government.
