Published: May 06, 2014 7:30 AM EDT

LAGOS, Nigeria (AP) Nigeria's Islamic extremist leader says the nearly 300 teen girls kidnapped from their school three weeks ago "will remain slaves with us."
In a new videotape, the head of the group Boko Haram (BOH'-koh hah-RAHM') says, "I abducted your girls."
The leader also threatens to attack more schools and abduct more girls.
Boko Haram is against educating girls.
Police say some 53 of the girls kidnapped April 15 were able to escape.

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5/6/2014 6:58:01 AM (GMT -4:00)