Nigerian Boko Haram militants kidnapped the wife of Cameroon's vice prime minister and killed at least three people on Sunday in a cross-border attack involving more than 200 assailants in the northern town of Kolofata, Cameroon officials said.

A local religious leader, or lamido, named Seini Boukar Lamine, who is also the town's mayor, and five members of his family were also kidnapped in a separate attack on his home.