WaPo: Iran has begun production of weaponized anthrax and is actively working with at least five other pathogens, including smallpox, in a drive to build an arsenal of biological weapons, according to an opposition group that previously exposed a secret nuclear enrichment program in the country.

The group, Mujaheddin-e Khalq, citing informants inside the Iranian government, says the anthrax weapons are the first fruits of a program begun secretly in 2001 to triple the size of Iran's biowarfare program. Weapons experts and intelligence officials say many of the group's past claims about Iranian weapons programs have been largely reliable.

ed: treat as suspect in light of recent US-Mujahadin-e Khalq developments?