In The name of Allaah, The Most Merciful, The Bestower of Mercy
Al-Allaamah Abdul Azeez Aala Shaikh (may Allaah preserve him) says:
*Boka Haraam is a misguided group and are from the khawaarij.
*Their actions are evil and harmful for Islam and the Muslims.
*Their actions are destructive.
*Abducting girls is from the actions of a misguided group.
*If Boka Haraam are claiming a call to jihad, then it is nothing but ignorance and enmity against Islaam and the Muslims.
*Boka Haraam are not upon correctness and guidance because Islaam opposes abduction/kidnapping, unlawful killing and transgression.
*Marrying off kidnapped/abducted females is haraam and it is not permissible to give them in marriage.
Abridged and slightly paraphrased.
See link for further details: http://www.sahab.net/forums/index.php?showtopic=143763