Boko Haram is trying to expand its activities beyond Nigeria’s mainly Muslim north, to include the commercial capital Lagos, as well as other parts of the country, officials say.
According to a BBC report, twelve members of the Islamist militant group have been arrested in Lagos, Nigeria’s intelligence agency says.
It is not possible to independently verify details of the statement.
Boko Haram has waged a six-year insurgency in Nigeria, mainly confined to the north-east of the country.
Reports say that more than 50 people were killed in a suspected Boko Haram attack in north-eastern Borno State on Friday, about 100km (62 miles) north of the state capital Maiduguri.