I don't know how authentic this is.

There were indications yesterday in Abuja, that the leader of the Boko Haram Islamic sect, Imam Abubakar Shekau was wounded during a gun battle with security men recently.
Sources said in Abuja that security agencies traced the whereabouts of Shekau, who succeeded late Mohammed Yusuf as leader of the sect to Mali, where he escaped to after sustaining injuries during a gun duel with soldiers of the Joint Task Force, JTF, a.k.a Operation Restore Order.
Sources told Saturday Vanguard that the Federal Government approved the deployment of 1,200 soldiers apparently because of the need to arrest the wounded Boko Haram leader.
The Chief of Army Staff, Lt. General Azubuike Ihejirika who addressed officers and soldiers of the Nigerian army shortly before they were airlifted to Mali Thursday in Kaduna, asked them to be extra vigilant as there are indications that some terrorists had sneaked into the country with the aim of causing havoc.
Ihejirika however, pointed out that the Nigerian Army was not resting on its oars as the war against terror was being won.
http://www.informationng.com/2013/01...s-to-mali.html