According to new evidence released by the government, it seems that Bruce Ivins, the alleged long-sought anthrax killer, was severely disturbed, suffering from a mental disease. Between 2000 and 2006 he was prescribed antidepressants.

This week, The Justice Department said there was no doubt that Ivins was the perpetrator of the terrifying act that killed 5 people, injured 17 others and shocked the country.

On July, 29, the Unites States government microbiologist allegedly killed himself prior to formal charges being filed by the FBI. He passed away at Frederick Memorial Hospital after the intake of a significant dose of Tylenol mixed with codeine.

For the past 18 years, the 62-year-old microbiologist worked for the U.S. biodefense research laboratories at Fort Detrick, Maryland, preparing anthrax formulations that were used in vaccine experiments on animals.

Bruce Ivins is the leading suspect in the 2001 anthrax attacks that frightened American people in the weeks following the coordinated suicide attacks by al-Qaeda upon the U.S. on Sept, 11, 2001. He had access to lethal substances and has worked with very hazardous pathogens and viruses in an attempt to find out remedies in case they might one day be employed as a weapon.

The US government is blamed for unsuccessfully monitoring, storing and securing the anthrax at Fort Detrick. On behalf of the family members of Robert Stevens, the photo editor who died after inhaling anthrax spore, a lawsuit was filed in 2003, seeking $50 million. His company head office was sent several anthrax-contaminated letters, proclaiming "Death to America... Death to Israel... Allah is Great.”