COLOMBIA · SECURITY

Key Facts

—What happened: Suspected ELN guerrillas dropped about 40 grenades from drones on soldiers in Pelaya, Cesar.

—The toll: Three soldiers were wounded in Thursday’s attack in the south of the department.

—The response: Anti-drone systems go to El Copey, Curumaní, La Jagua de Ibirico, Pelaya and Valledupar.