Bogotá, Colombia – Bogotá’s inner-city enclave of San Bernardo was struck by a grenade attack last week, the fourth such attack in a month, even amid a security clampdown which has done little to dent a turf war between drug gangs. In the latest incident on the evening of March 25, two men mounted on a motorbike tossed an explosive device into a group of people gathered on a street corner of the barrio, which lies in the heart of the Colombian capital’s troubled Santa Fe district.