British officials identified 19 of the suspects accused of plotting to blow up U.S.-bound aircraft, making public a list of names that fueled suspicions of a Pakistan connection. Travelers saw shorter lines at airports as flight schedules slowly returned to normal Friday.

Five Pakistanis have been arrested in Pakistan as suspected “facilitators” of the plot, a government official said, in addition to two Britons arrested there about a week ago.

The Bank of England said it had frozen the accounts of 19 people arrested Thursday. The men, ranging in age from 17 to 35, had names of Muslim origin, many of which are common in Pakistan.

A security officer from the Transportation Security Administration warns departing passengers that "liquids and gels" are no longer permitted on airline flights at Washington Dulles International Airport. (AFP/Paul J. Richards)

A security officer from the Transportation Security Administration warns departing passengers that “liquids and gels” are no longer permitted on airline flights at Washington Dulles International Airport. (AFP/Paul J. Richards)

British police have arrested 24 people suspected of involvement in the plot. Investigators, describing a plan on the scale of the Sept. 11 attacks, said the attackers planned to use common electronic devices to detonate liquid explosives to bring down as many as 10 planes.

The bombs were to be assembled on the aircraft, apparently with peroxide-based solution and everyday carry-on items such as a disposable camera or a music player, two American law enforcement officials told The Associated Press. The officials spoke on condition of anonymity because Britain asked that no information be released.

A federal law enforcement official in Washington said that at least one martyrdom tape was found during raids across England on Thursday. Such a tape, as well as the scheme to strike a range of targets at roughly the same time, is an earmark of al-Qaida.

British Home Secretary John Reid said Britain was grateful for Pakistan’s cooperation and that officials believed the main suspects were in custody. However, the threat level in the U.K. remained at “critical,” the highest level.

Agents in Pakistan arrested at least seven people, including two British nationals of Pakistani origin who provided information on the terror plot, a senior government official said Friday. The arrests were made in the eastern city of Lahore and in Karachi, the official said on condition of anonymity because he did not have the authority to speak formally on the issue.

Two were Britons arrested about a week ago, he said. The five Pakistanis were arrested on suspicion that they served as local “facilitators” for the two Britons, the official said. It wasn’t clear when they’d been detained.

The Guardian newspaper, citing unidentified British government sources, said that after the arrests a message was sent to Britain telling the plotters: “Do your attacks now.” That message was intercepted and decoded earlier this week, The Guardian said.

A U.S. congressman briefed by intelligence officials, who did not want to be identified because of the sensitivity of the investigation, said U.S. intelligence had intercepted terrorist chatter.

Many of the 24 suspects arrested in Britain were said to be British Muslims, and neighbors said at least two of those arrested were converts to Islam.

Airline passengers faced a second day of disruptions and disappointment as airports struggled to restore flight schedules.

“It is going to be another difficult day today, both for airports and for passengers, but there is cause for optimism that we will get more flights off today,” said Stephen Nelson, chief executive of British Airports Authority, which runs Britain’s major airports.

At Heathrow, Europe’s busiest airport, around 70 percent of flights were running, and most inbound flights arrived on time, though flights from the United States — which increased security measures in the wake of the threat — were heavily delayed.

New security measures banning liquids and gels on flights remained in place.

“I quite understand all the checks. I know why they have got to do it,” said Elaine Loman, who was hoping to catch a flight from Heathrow to Barcelona, Spain.

The threat of liquid explosives led to a ban on carrying nearly any kind of fluid aboard an aircraft. Mothers tasted baby bottles in front of airport security guards to prove it contained milk or formula — not a component of an explosive.

The raids in Britain on Thursday followed a monthslong investigation, but U.S. intelligence officials said authorities moved quickly after learning the plotters hoped to stage a practice run within two days, with the actual attack expected just days after that.

The test run was designed to see whether the plotters would be able to smuggle the needed materials aboard the planes, the officials said, speaking on condition of anonymity.

Targeted were United, American and Continental Airlines flights from Britain to major U.S. destinations, which counterterrorism officials said probably included New York, Los Angeles and Washington, D.C. Los Angeles Mayor Antonio Villaraigosa said the individuals plotted to detonate liquid explosive devices on as many as 10 aircraft.

A British police official, speaking on condition of anonymity because of the sensitivity of the investigation, said the suspects were “homegrown,” though it was not immediately clear if all were British citizens.

Tariq Azim Khan, the Pakistani minister of state for information, said “these people were born and brought up in the United Kingdom. Some of them may have parents who were immigrants from Pakistan.”

Raids were carried out at homes in London, the nearby town of High Wycombe and in Birmingham, in central England. Searches continued throughout the day, and police cordoned off streets in several locations. Police also combed a wooded area in High Wycombe.

Imtiaz Qadir, of the Waltham Forest Islamic Association, said one of the suspects was a woman in her 20s who had a 6-month old child. “They have taken the child too, because it needs to be with its mother.”

Neighbors identified one of the suspects as Don Stewart-Whyte, 21, from High Wycombe, a convert who changed his name to Abdul Waheed.

“He converted to Islam about six months ago and grew a full beard,” said a neighbor, who refused to be identified. “He used to smoke weed and drink a lot but he is completely different now.”

Ibrahim Savant of Walthamstow, one of the names on the Bank of England list, was a convert formerly known as Oliver, neighbors said.


Associated Press Writers Pat Milton and Tom Hays in New York, Lara Jakes Jordan in Washington, Jay Lindsay in Boston and Sadaqat Jan in Islamabad contributed to this report.