ISLAMABAD, Jan. 7 (Xinhua) -- The United States is concerned about the continued "provocative actions" and false allegations against U.S. personnel working to implement the new partnership between the leaders of Pakistan and the United States, the U.S embassy said here on Thursday.

    Pakistani authorities recently briefly detained U.S. personnel and their vehicles in different parts of the country for what they say using fake number flats for their diplomatic cars.

    "The U.S. Embassy today called for immediate action by the Ministry of Foreign Affairs, which has responsibility to facilitate proper arrangements under which a foreign mission may operate with full security," U.S. embassy spokesman Richard Snelsire said.

    In the most recent incident, a U.S. Consulate General vehicle with two Pakistani employees of the Consulate and their police constable escort were detained when traveling in Gwadar, a port city in southwest Pakistan, Snelsire said in a statement.

    He said that the staff was preparing for the upcoming visit of U.S. development assistance staff to one of Pakistan's most impoverished regions. "The U.S. Embassy emphasizes that all U.S. vehicles in Pakistan are appropriately registered with the Pakistani authorities and carry at all times full documentation attesting to their legal status," said the statement.

    According to Snelsire, U.S. Ambassador to Pakistan Anne W. Patterson pointed out in Karachi on Thursday that the Ministry of Foreign Affairs is obliged to provide proper arrangements in order to address the security concerns of foreign diplomats in Pakistan.

    The Ambassador offered assurances that American diplomats and their staff will comply with all procedures of the Pakistani government, but that Pakistani Foreign Affairs Ministry has not yet implemented the agreed upon procedures, he said.

    The spokesman said that the U.S. Mission renews its call on Pakistan officials to implement immediately the mutually agreed upon procedures for the issuance of license plates to U.S. Mission vehicles and to cease these contrived incidents involving U.S. Mission vehicles and personnel.

Special Report: Pakistani Situation