The Los Angeles Times reports that Fitzgerald's team went out to interview neighbors of Joseph Wilson and Valerie Plame Wilson today to ascertain whether they knew she worked for the CIA.

CNN had more tonight (available on Lexis.com):

A neighbor of Valerie Plame has been interviewed by FBI agents for the second time. The agents asked Marc Lefkowitz on Monday night whether he knew about Plame's work at the CIA before her identity was leaked in a July 2003 column. Lefkowitz told agents he did not, according to his wife, Elise Lefkowitz. ...Lefkowitz said this is the second time FBI agents have asked whether the couple was aware of Plame's CIA work. She said the first interview took place several months ago.

FBI agents are looking into who leaked Plame's name to the press. Federal law makes it a crime to deliberately reveal the identity of a CIA operative, and special prosecutor Patrick Fitzgerald is heading a probe into the matter. (Posted 6:01 p.m.)