By Lara Jakes Jordan and Matt Apuzzo Associated Press WASHINGTON -- The murder weapon was a flask.

By Donna Leinwand, Ken Dilanian, Steve Sternberg and Dan Vergano WASHINGTON -- On several nights before the anthrax attacks in September and October 2001, bioweapons scientist Bruce Ivins repeatedly spent long periods alone in a secure laboratory that housed a strain of the lethal bacteria.

Seven years after the probe started, the FBI is said to be ready to go public with documents and explanations about its investigation into the fatal anthrax attacks that still has no definitive culprit.

Survivors of the 2001 anthrax attacks and relatives of those killed by the deadly powder said yesterday that they want a full accounting from the FBI of its investigation to date, and they are not yet convinced that Bruce Ivins, the government scientist who killed himself last week, was responsible.

By Lara Jakes Jordan and Matt Apuzzo Associated Press WASHINGTON -- His decades-long obsession with a college sorority may link a former Army biowarfare scientist to four anthrax-laced letters dropped off at a New Jersey mailbox in 2001, authorities said Monday in the latest twist of one of the most bizarre unsolved crimes in FBI history.