The FBI warned U.S. law enforcement officials on Wednesday to be on the lookout for clandestine laboratories that can make chemical and biological agents, including highly infectious bacteria and toxins like ricin. In its weekly intelligence bulletin distributed to law enforcement officials across the country, the FBI expanded on last week’s bulletin warning to look out for people who may be trying to make improvised chemical weapons. “Recent events, including the January 2003 arrests in the United Kingdom of Algerian extremists apparently attempting to produce ricin toxin in their residence, indicate an ongoing interest among terrorists in developing improvised weapons of mass destruction,” the bulletin said. British anti-terror police arrested several people in January after finding traces of the deadly toxin ricin. Full Story