The President of the Central African Republic (CAR) has been in contact with warlord Joseph Kony, head of the Lord’s Resistance Army (LRA), urging him to surrender, reports Reuters.

However, the African Union’s (AU) special envoy on the LRA told the UN that Kony has “used the negotiations as a window of opportunity” to relocate many of his fighters to north-eastern CAR.

The AU has been hunting him since he went underground in 2005. Kony has been indicted for war crimes by the International Criminal Court for his two-decade-long guerrilla war against the Ugandan government.