Gunmen kidnapped at least 52 people, including children, in a weekend attack on a village and military base in northwest Nigeria’s Zamfara state, local sources said yesterday. Kidnappings have become a major source of income for armed groups in Nigeria, including jihadists in the northeast and criminal gangs, who dominate much of the northwest. Zamfara is one of the hardest hit states. The gunmen on motorcycles swept into Kasuwar Daji village in the Kaura Namoda around midnight Saturday into Sunday, first attacking a military base on the outskirts of the community, residents said.