An Uzbek national arrested in Pakistan has told interrogators that Al Qaeda organised this year's deadly suicide attack on the United States consulate in Karachi, a security official said on Wednesday. Five people, including an American diplomat, were killed in the suicide bombing outside the US mission on March 2, the eve of a visit to Islamabad by US President George W Bush.The security official, speaking on condition of anonymity, said that the Uzbek Al Qaeda suspect had been picked up a few weeks ago in Wana, South Waziristan. The official said the suspect had revealed that the attack had been planned by a Qaeda unit and executed by local militants. "He said he brought the plan to Karachi from Wana and handed it over to local militants for execution," the official said. "The whole plan to bomb the consulate before President Bush's arrival was conceived by Al Qaeda in the tribal territory of Waziristan," he added. "We are very close to resolving the case and we believe that most of those who planned the attack were Uzbeks."