Officials say a senior Afghan peace negotiator has been shot dead in Kabul.
Arsala Rahmani was a former Taliban minister and a key member of Afghanistan's High Peace Council, which leads Afghan efforts to negotiate a peace deal with the Taliban.
Correspondents say his death is a major blow to President Hamid Karzai as Rahmani was a key figure in reaching out to Taliban commanders.
Last year the chief of the peace council was also killed in a suicide attack.
Police say that Rahmani was shot dead this morning by an unidentified gunman while on his way to work in western Kabul, in what was described as a carefully planned attack.
The Taliban have denied involvement in the killing.