State Department officials acknowledged that setting up an American-supported channel could prove challenging in a region where massacres, bombings and shootings by Boko Haram are common, and where the American government and Western educational programs are far from popular. The group has been known to attack media organizations in Nigeria.

The new television channel, to be called Arewa24 — arewa means north in the Hausa language — is financed by the State Department’s Bureau of Counterterrorism, and it is expected to cost about $6 million. State Department officials would discuss the program only on the condition of anonymity, and offered sparse information about it. But details have emerged in publicly available contracting documents and in interviews with people familiar with the effort.