If so, the lab has 45 days to determine through tests whether a major investigation should be initiated since the reliability and performance of the weapon could be involved.

CENTERFORSECURITYPOLICY: Center For Security Policy

Federal agents have joined the investigation, and the bombs were sent to an FBI lab to determine what materials were used.

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Following a federal investigation, Second Life's parent company, Linden Lab, banned all gambling in the virtual world--a major source of its business.

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Based on the investigation, authorities allege that Farak tampered with drug evidence at the lab.

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Sources familiar with the investigation say the dress has now completed preliminary tests at the FBI crime lab in Washington.

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The FBI had traced the anthrax used in the attacks to the lab using a new genetic technology, a U.S. official familiar with the investigation said.

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Hatfill, who once worked at the nearby U.S. Army biological lab at Fort Detrick, has been called a "person of interest" in the investigation into anthrax-laced letters that were mailed around the nation last year.

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Fishell's lab chemicals survived for the most part, but he lost most of his mouse population that was critical to his investigation of diseases like schizophrenia, bipolar disorder and epilepsy.

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