The international peacekeeping force in Afghanistan say it has been unable to identify the killers of Afghan Vice President Haji Qadir, who was murdered last month in Kabul.
The peacekeeping force released the results of its investigation into the July sixth killing today (Sunday) in the Afghan capital.
The peacekeepers say a lack of effective security around Mr. Qadir was the main factor leading to his murder.
Their report says the killing was made more likely by a culture in which security is seen as more of a personal matter than a government responsibility.
The Afghan vice president was murdered in broad daylight July sixth in Kabul. Witnesses said at least two gunmen posing as security guards opened fire on his car as he left his office, killing Mr. Qadir and his driver.
Peacekeeping force officials have said their troops might have been able to catch the killers had Afghan authorities not waited more than an hour before informing them of the attack.
Afghan President Hamid Karzai has vowed to find those behind the murder, but there have been no arrests.
In its report today, the peacekeepers say they have asked the Afghan government to release 26 people detained in connection with the crime due to lack of evidence. The report says most of the 26 have been released.
Since the killing, U-S troops have begun serving as bodyguards for President Karzai. Meanwhile, the peacekeepers are providing Afghan soldiers with security training.