KABUL, Oct. 18 (Xinhuanet) -- Four Afghan policemen were killed Monday night as they mistakenly came under US troops' fire in Afghanistan's southern Kandahar province, provincial governor confirmed Tuesday.

    "US troops were going to Miwand district last night and mistakenly pounded a police post in Tamir-e-Jadid area, and killed four police on the spot and injuring another," Assadullah Khalid told Xinhua.

    He blamed misunderstanding for the bloody incident but did not give more details.

    Both government and the US military have yet to make any comments on the issue.

    In a similar incident early this month in the neighboring Helmand province, four more policemen were killed and four others injured.

    The US military termed it a friendly fire and expressed sorrow over that.

    Over 100 people mostly civilians including children and women, according to Afghans have been killed in a series of friendly fires of the US military over the past three years. Enditem