Developments in Aftermath of Attacks

By The Associated Press Recent developments related to last week's terrorist attacks: _Authorities say federal grand jury in New York has opened investigation. _Law enforcement officials say four people arrested as material witnesses. FBI has detained at least 75 people for questioning and is seeking nearly 200 more. _Hundreds of Islamic clerics gather in Kabul, Afghanistan, to discuss conditions for extraditing suspected terrorist Osama bin Laden to country other than the United States. _Attorney General John Ashcroft says new rules will allow suspected illegal immigrants to be detained for 48 hours, instead of 24 hours. He says new anti-terrorism task force will have links to every major U.S. city. _Defense Secretary Donald Rumsfeld says administration preparing sustained offensive against terrorists and countries that support them. _Wall Street posts modest slump one day after the Dow's biggest one-day point drop in history. _Transportation Secretary Norman Mineta says Bush administration preparing relief package for nation's hard-hit airline industry. _Boeing Co. announces plans to lay off as many as 30,000 commercial airplane workers by the end of next year as a result of an expected slowdown in orders caused by last week's terrorist attacks. _Bush signs into law a $40 billion package to rebuild after last week's terrorist attacks. He also puts his signature to the congressional resolution authorizing him to use military force against those responsible. _President Bush leads nation in moment of silence at 8:48 a.m. EDT Tuesday to mark the beginning of the attacks one week earlier. _For first time in its 56-year history, United Nations postpones General Assembly's annual gathering of world leaders, scheduled to begin next week.