The Pamplona Attas live mainly in the Northwestern part of Cagayan. Their language, also called Northern Cagayan Negrito, is closely related to and mutually intelligible with the Ibanag language.
Sources:
Ecumenical Center for Development. ND. Philippine Regional Profiles. Quezon City: KASIMBAYAN, Inc.
Lewis, M. Paul (ed.), 2009. Ethnologue: Languages of the World, Sixteenth edition. Dallas, Tex.: SIL International, http://www.ethnologue.com/
