LAGOS, Nigeria (AP) — With little to celebrate, Nigerians marked Easter Sunday with heightened security against a spreading Islamic uprising, mourning the deaths of at least 75 bomb blast victims and fearful of the fate of 85 abducted schoolgirls.

The homegrown terrorist network Boko Haram on Saturday claimed responsibility for last week’s rush-hour explosion at a busy bus station in the capital, Abuja, and threatened more attacks.