KABUL, May 31 (Xinhuanet) -- A low-ranking police officer was killed as unidentified gunmen attacked his car in the capital citylast night, a spokesman of Interior Ministry said Monday.

    "Unknown attackers sprayed bullets on a Toyota car in Khairkhana district around 9:30 pm last night killing a policeman Nasir on the spot," Lutfullah Mashal told Xinhua on telephone.

    He declined to give more details, saying investigation was going on.

    No one has claimed responsibility for the attack and Kabul police has yet to point finger at any groups or individuals.

    In a similar incident early last month, unknown armed men killed two policemen in Dashti Barchi west of the capital city ofKabul.

    The latest incident took place amid beefed up security in the Afghan capital as the police aided by International Security Assistance Force for Afghanistan (ISAF) have been hunting the suspected terrorists in the city.

    Afghan police with the support of ISAF detrained 37 terrorism suspects from in and around the capital last Wednesday and Thursday respectively. Enditem