The head of the Afghan Taliban's political office in Qatar resigned, in the latest sign of a split in the group following the group leader Mullah Omar's death.
Tayyab Agha said in a statement he would step down and criticized the way in which Mullah Omar's successor, Mullah Akhtar Mansour, had been chosen, BBC reported.
Mullah Mansour was named leader on Thursday after Mullah Omar's death was confirmed. However, some Taliban members said they had not been consulted on the decision.
Tayyab Agha, who previously served as Mullah Omar's personal secretary, said he was stepping down to avoid "expected future disputes."
He said it was "a great historical mistake" that the new leader had been "appointed outside the country and from the people who are residing outside the country," a reference to claims that Mullah Mansour's appointment was influenced by circles associated with the Pakistani government.
He added that the militant group should handle all its affairs from within Afghanistan and criticized the fact that Mullah Omar's death "was kept secret for almost two years."
The Taliban set up an overseas office in Qatar in 2013, as part of a move to launch a political arm for the militant group, with a known address and authorized representatives who could attend talks.
