U.S. Pressured UK To Arrest Alleged Terror Suspects

08/12/06 "NBC News"-- -LONDON - NBC News has learned that U.S. and British authorities had a significant disagreement over when to move in on the suspects in the alleged plot to bring down trans-Atlantic airliners bound for the United States.

A senior British official knowledgeable about the case said British police were planning to continue to run surveillance for at least another week to try to obtain more evidence, while American officials pressured them to arrest the suspects sooner. The official spoke on condition of anonymity due to the sensitivity of the case.

In contrast to previous reports, the official suggested an attack was not imminent, saying the suspects had not yet purchased any airline tickets. In fact, some did not even have passports.

The source did say, however, that police believe one U.K.-based suspect was ready to conduct a "dry run." British authorities had wanted to let him go forward with part of the plan, but the Americans balked.

At the White House, a top aide to President Bush denied the account.

-- Aram Roston, Lisa Myers, and the NBC News Investigative Unit