Kano, Nigeria: Boko Haram’s elusive leader Abubakar Shekau broke his silence Thursday to insist he was ‘still around’ following reports Islamic State had replaced him, but his message fuelled talk of a split within the jihadist group.

For months, speculation has been rife over the fate of Shekau, who has led the Nigeria-based Islamist group since 2009 but has not been heard from since March.

But on Thursday, following a report suggesting he had been replaced, Shekau released an audio message insisting he was still very much alive and in charge of the group, which last year had pledged allegiance to the Islamic State jihadists.

‘People should know we are still around. We will never cause any discord among the people, we will live by the Koran,’ Shekau said in a 10-minute audio message.

‘This is our stand and we remain in our capacity as Jama’atu Ahlissunnah Lidda’awati Wal Jihad,’ he said using the Islamic name for Boko Haram.

His voice was recognised by an AFP journalist familiar with previous messages he has posted on social media.

It was also confirmed as Shekau’s voice by Berlin-based jihadist expert Yan St-Pierre of the Modern Security Consulting Group (Mosecon), who said his message had laid bare divisions within the group.

‘The person who posted on the internet is a very reliable source,’ he told AFP.

‘We knew that Boko Haram was divided on a strategic point of view, now their divisions are public,’ he said.

‘They deceived me’

Shekau’s audio message was released after IS on Tuesday published an interview with Sheikh Abu Musab al-Barnawi in its Al-Naba online weekly magazine in which he was introduced as Boko Haram’s new leader.

In the interview, Barnawi talks about the history of jihad in this region but makes no clear reference to Shekau.

Since March 2015, Barnawi has appeared in several videos distributed by Boko Haram, claiming responsibility for successive attacks, earning him the reputation of group spokesman, experts say.

But in his message, Shekau takes aim at Barnawi, dismissing him as an infidel who condones living in an un-Islamic society without waging jihad.

And in a tacit acknowledgement that his own position as leader may have been usurped, he speaks of being tricked by some of his followers.

‘They deceived me,’ he said.

‘And now I find myself being forced to follow another character who practices disbelief,’ he says, in a message which becomes increasingly more animated as he speaks.

A house divided

St-Pierre said the message suggested Shekau was trying to retain his base of support within Boko Haram without compromising the commitment to IS.

‘In the message, Shekau refers to Boko Haram under its previous name, but with some ISIS propaganda elements, as if he wanted to reassure its old combattants and base, without denying his commitment to (its leader Abu Bakr) al-Bagdadi,’ he said.

Speculation over the fate—and alleged disappearance—of Shekau has been rife in recent months: he was last seen in a YouTube video in March, looking weak, and saying: ‘For me, the end has come.’

He became Boko Haram leader after Nigerian security forces killed the group’s founding chief Mohammed Yusuf in 2009, sparking an insurgency that has left 20,000 people dead and forced 2.6 million people to flee their homes.

But the group has become fractured under his leadership, experts told AFP after the Barnawi interview was released.

‘Boko Haram has lost its prestige and become difficult to control (under Shekau). Today, Boko Haram is divided into several little groups,’ St-Pierre said.

And a Nigerian security analyst said he believed Shekau was still alive, but that IS may be seeking to clean up Boko Haram’s reputation among jihadists, by ousting a leader seen as disorganised and unreliable.

Boko Haram has been pegged back by an aggressive fightback from the Nigerian military since January 2014, losing territory and its capacity to mount conventional attacks.