WASHINGTON, March 4 (Xinhuanet) -- US President George W. Bush called Italian Prime Minister Silvio Berlusconi to express his regrets after shots fired by US soldiers killed an Italian secret service agent outside Baghdad, the White House said Friday.

    Calling Berlusconi from Air Force One, "the president assured prime minister Berlusconi that the incident will be fully investigated," the White House said in a statement.

    An Italian journalist, Giuliana Sgrena, was freed by her Iraqi kidnappers Friday only to be shot and wounded by US troops firing at the convoy carrying her to safety, Berlusconi earlier said in Rome.

    Her escort, Nicola Calipari, was killed. Enditem