Doctors and scientists examined 21 of the more than three dozen people affected at the now-abandoned building, concluding that microwaves are "a main suspect" in their medical conditions, a story in The New York Times says.

"Everybody was relatively skeptical at first,'' Dr. Douglas H. Smith, the head author of a study of the victims' ailments, told the newspaper in an interview. "[But] everyone now agrees there's something there."

He added the doctors and other scientists who studied the apparent attacks are "increasingly sure'' the victims sustained brain injuries.