By KAREN GULLO and JOHN SOLOMON
Associated Press Writers

WASHINGTON - The Bush administration is readying a new "most wanted" list of suspected terrorists who remain at large, seeking to bolster the pressure for their capture, officials said Tuesday.

President Bush is expected to announce the list Wednesday during an appearance at the FBI headquarters that has been at the epicenter of the investigation into the Sept. 11 suicide hijackings.

Law enforcement and government officials familiar with the list told The Associated Press the final drafts included 19 to 22 names, including that of Osama bin Laden and two deputies, Ayman al-Zawahri and Mohamed Atef.

Officials have said evidence gathered since Sept. 11 has connected both deputies to the suicide hijacking plot. The international police agency Interpol also issued an arrest warrant for al-Zawahri since the Sept. 11 hijackings.

The officials, who spoke only on condition of anonymity, said others expected to make the new Bush list included:

_Ahmed Khfaklan Ghailani and Sheikh Ahmed Salim Swedan, two al-Qaida operatives accused of buying a truck used in the U.S. embassy bombings in Africa in 1983.

_Saif al Adel, whom British Prime Minister Tony Blair last week identified as a senior member of al-Qaida believed to have provided training to tribes in Somalia, where U.S. troops were attacked and killed in 1993.

_Ibrahim al-Yacoub and Abdel Karim al-Nasser, two men named as suspects in the federal grand jury indictment issued in the 1996 Khobar Towers bombing in Saudi Arabia.

Officials said others named on the list would include suspects in the 1985 hijacking of TWA Flight 847, the 1993 bombing of the World Trade Center and a foiled 1995 plot to bomb airliners in the Far East.

Law enforcement officials also said Tuesday they were beginning to narrow their focus on possible collaborators to a much smaller group among the estimated 600 people arrested or detained in the investigation since Sept. 11.

Among those being most closely examined, officials said, were:

_Atef and al-Zawahri, the two bin Laden deputies.

_Two men apprehended after they left New Jersey on a jetliner the day of the attacks and later boarded a train headed to Texas. They were found with box cutters like those used by the hijackers.

_A French-Algerian man arrested before the attacks in Minnesota who raised suspicions when he sought flight training for a jetliner but did not want to learn landing.

_A man arrested in Britain who prosecutors alleged helped train the hijackers to fly.

Meanwhile, federal authorities are awaiting test results to determine whether the strain of anthrax that killed a tabloid newspaper editor in Florida was manmade or natural.

Earlier Tuesday, federal officials said they believed the bacteria was manmade. But they later said test results had not been completed by the Centers for Disease Control and Prevention.

The officials said investigators so far have found no evidence linking the Florida incident to terrorism, but they suspect it might have involved criminal activity.

Overseas, anti-terrorist detectives in Ireland arrested three Libyans and an Algerian at their Dublin homes on suspicion of fund raising and providing logistical support to groups linked to bin al-Qaida.

More than $13,000 in cash, documents and financial records were seized, detectives said. They were also investigating the four men's various bank accounts.

In Florida, tests so far had not found any other workers at the tabloid newspaper building who were infected, or additional spores of the bacteria except those found on the computer keyboard of the victim who died last week, officials said.

Robert Stevens, 63, a photo editor at The Sun newspaper, died from an anthrax he inhaled, and high-tech tests were being performed to help determine the origin of the bacteria. He died on Friday, the first such death in the United States since 1976.

Dr. Jean Malecki, director of the Palm Beach County Health Department, said officials could not say whether someone genetically manufactured the bacteria or they occurred naturally becaus
sts weren't completed.

"We're open to the possibility of anything," she said, adding that anthrax tests at Stevens' home were negative.

The FBI continues to investigate how the anthrax was introduced and no one has been charged.

A tiny amount of anthrax was found on a keyboard at the newspaper offices, but tests on the building's air systems and areas frequented by Stevens have turned up no further evidence of the bacteria, the officials said.