The New York Police Department, responding to new information that terrorists may be planning to attack corporations or large public institutions in the city, last night advised building managers and corporate security personnel to step up their procedures to guard against vehicles rigged with explosives and against chemical agents placed in ventilation systems.
The warning followed meetings on Friday night and yesterday between Police Commissioner Raymond W. Kelly and Pasquale J. D’Amuro, the assistant director in charge of the New York field office of the Federal Bureau of Investigation, according to Mr. Kelly’s chief spokesman, Paul J. Browne.
Mr. Browne said the meetings were held to discuss the latest reports of a terrorist threat against the city, but declined to comment on the source of the new information. “The information is considered credible,” said another law enforcement official, who insisted on anonymity. The official said the police and federal terrorism authorities, who have received similar threats before, were unusually concerned about the new information.
Yesterday’s warnings appeared to be linked to the arrest on July 19 in Texas of Farida Goolam Mohamed Ahmed after she entered the United States from Mexico by crossing the Rio Grande and crawling through the brush.
According to several news accounts, she had an altered passport along with several thousand dollars in cash and an airline ticket to New York. CNN reported that she was charged with illegal entry, making false statements and falsifying a passport.