The undercover work yielded information that some protesters were preparing bamboo spears and other potentially dangerous weapons in advance of an expected eviction by the LAPD, none of which were used, according to City News Service which first reported the story…

Occupy L.A. protester Mario Brito told City News Service he was not surprised by the revelation, but said it was “tantamount to 1950s McCarthyism.”

Meanwhile, the city attorney’s office filed criminal misdemeanor charges Friday against 27 more of the people who were arrested following the police sweep of the camp.

In all, 46 of the 291 people arrested during the raid have been charged with misdemeanor crimes of failure to disperse from an unlawful assembly. Some also were charged with resisting arrest.