The spokesman for Nigerian militant group Boko Haram has been captured after a months-long surveillance operation , a spokesman for Nigerian police said Wednesday . NEW : Amnesty International accuses police of extra-judicial killings . He was captured after a months-long surveillance operation . Comment: Boko Haram has carried out multiple attacks in Nigeria recently .
NEW : Amnesty International accuses police of extra-judicial killings . He was captured after a months-long surveillance operation . Comment: Boko Haram has carried out multiple attacks in Nigeria recently .