FBI agents and Kenyan police questioned a suspect in Nairobi on Monday, hoping to find some trail to the terrorists who left 257 people dead and thousands injured in the two U.S. embassy bombings in East Africa.

Although the FBI confirmed Monday that it was questioning Mohammed Saddiq Odeh, the agency said he had not confessed or implicated anyone else in the Aug. 7 bombings of the U.S. embassies in Kenya and Tanzania.Odeh, who was arrested that same day at the airport in Karachi, Pakistan, after flying in from Nairobi, was handed over to Kenyan authorities on Friday.

"Mr. Saddiq Odeh has not admitted any responsibility in the bombings in Nairobi or Dar es Salaam, nor has he implicated anyone else in those events," the FBI and Kenyan police said in a joint statement.

Meanwhile, a Kenyan newspaper reported Monday that FBI agents had flown another suspect back to Kenya following his arrest in the United Arab Emirates.

The East African newspaper, citing airport sources, said the suspect is a Pakistani national who was arrested in Dubai and flown to Nairobi on Friday on a U.S. military plane. The report did not give the suspect's name or

specify his alleged role in the bombing.

A spokesman for the U.S. Embassy in Nairobi, Bill Barr, and Kenyan police both declined comment on that report Monday.

In Pakistan on Monday, most U.S. Embassy personnel were leaving and other Americans were urged to join them. The U.S. State Department updated its "worldwide caution" for Americans, warning specifically against all travel to Pakistan.

FBI agents had flown to Pakistan to try to talk to Odeh, but one Pakistani government source reported that they were not allowed to question him there.

The News, Pakistan's national newspaper, quoted unidentified government sources as saying that Odeh confessed to planning the bombings and claimed the attack was sponsored by Osama bin Laden, a wealthy Saudi living in Afghanistan whom U.S. officials have identified as a possible suspect in the embassy bombings.U.S. officials say bin Laden is among the world's most militant sponsors of terrorism. The News said Odeh is a 34-year-old Palestinian engineer. . A ministry statement identified Odeh only as an "Arab national."

More FBI agents arrived over the weekend in the Kenyan capital of Nairobi, where they are expected to stay for four to five months investigating the bombings.

Newsweek magazine reported that investigators have found a 100-pound steel drive shaft believed to have belonged to the pickup truck that carried the bomb to the embassy in Nairobi. The shaft, found more than a half-mile from the site, contains part of the vehicle identification number, the magazine said, quoting unidentified sources. The FBI would not comment on the Newsweek report.